Hi ADOS,
While other people’s comments about the knowledge and service of a particular store or business can certainly be very helpful … I would always keep in mind that you are the only one that can feel what you feel on a mattress so I would be very cautious about about using anyone else’s suggestions, experiences or reviews on a specific mattress (either positive or negative) or review sites in general as a reliable source of information or guidance about how you will feel on the same mattress or how suitable or how durable a mattress may be for you. In many if not most cases they can be more misleading than helpful because a mattress that would be a perfect choice for one person or even a larger group of people in terms of “comfort”, firmness, and PPP may be completely unsuitable for someone else to sleep on (even if they are in a similar weight range). In other words … reviews or other people’s experiences in general won’t tell you much if anything about the suitability, quality, durability, or “value” of a mattress for any particular person (see post #13 here).
I’m not sure what you’ve read since you found the site but just in case you haven’t read it yet … the first place to start your research is the mattress shopping tutorial here which includes all the basic information, steps, and guidelines that can help you make the best possible choice … and perhaps more importantly know how and why to avoid the worst ones.
Two of the most important links in the tutorial that I would especially make sure you’ve read are post #2 here which has more about the different ways to choose a suitable mattress (either locally or online) that is the best “match” for you in terms of “comfort”, firmness, and PPP that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for and post #13 here which has more about the most important parts of the “value” of a mattress purchase which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability (how well he will sleep), durability (how long he will sleep well), and the overall value of a mattress compared to your other finalists based on all the parts of your personal value equation that are most important to you (including the price of course and the options you have available after a purchase if your choice doesn’t turn out as well as you hoped for).
While again nobody can speak to how any specific mattress will “feel” for someone else or whether it will be a good “match” in terms of comfort, firmness, and PPP because this is too subjective and relative to different body types, sleeping positions, and individual preferences, sensitivities, and circumstances and you are the only one that can feel what you feel on a mattress … outside of PPP (which is the most important part of “value”), the next most important part of the value of a mattress purchase is durability which is all about how long you will sleep well on a mattress. This is the part of your research that you can’t see or “feel” and assessing the durability and useful life of a mattress depends on knowing the specifics of its construction and the type and quality of the materials inside it regardless of the name of the manufacturer on the label or how a mattress feels in a showroom or when it is relatively new so I would always make sure that you find out information listed here so you can compare the quality of the materials and components to the durability guidelines here to make sure there are no lower quality materials or weak links in a mattress that would be a cause for concern relative to the durability and useful life of a mattress before making any purchase.
The major brands such as Sealy/Stearns & Foster, Simmons, and Serta all tend to use lower quality and less durable materials in their mattresses than most of their smaller competitors that will tend to soften or break down prematurely relative to the price you pay which is why I would generally suggest avoiding all of them completely (along with the major retailers that focus on them as well) regardless of how they may feel in a showroom along with avoiding any mattress where you aren’t able to find out the type and quality/durability of the materials inside it (see the guidelines here along with post #3 here and post #12 here and post #404 here).
Neither one of the mattresses you mentioned are memory foam mattresses and outside of using higher quality materials they would also feel very different from most Sealy memory foam mattresses (which I would avoid anyway).
You can see some comments about Leesa and Tuft & Needle and the type and quality of the materials they contain inside them along with many of the other what I call “simplified choice” mattresses in post #2 here and the first post in the same topic would also be well worth reading. Forum searches on each of them (using the search tab on top of the forum) will also bring up much more information and feedback about most of them as well.
I would be cautious with the Leesa because the 2" of 3 lb memory foam in the Leesa is a lower quality/density material than the minimums I would generally suggest in the durability guidelines here and I would consider it to be a potential weak link in the mattress and it may be worthwhile looking for a mattress that uses higher quality/density materials although the 2" of Avena polyfoam above the memory foam would improve the durability of the memory foam somewhat compared to having the same lower density memory foam in the top layer of the mattress.
There are no lower quality materials or weak links in the Tuft & Needle that would compromise the durability or useful life of the mattress for those that are in a BMI range of less than 30 but I would be cautious if you are in a BMI range of 30 or more where a mattress with higher quality/density and more durable materials may be a better choice.
When you can’t test a mattress in person then the most reliable source of guidance is always a more detailed phone conversation with a knowledgeable and experienced retailer or manufacturer that has your best interests at heart and who can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using (fast or slow response, resilience, firmness etc) and the options they have available that may be the best “match” for you based on the information you provide them, any local testing you have done or mattresses you have slept on and liked or other mattresses you are considering that they are familiar with, and the “averages” of other customers that are similar to you. They will know more about “matching” their specific mattress designs and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with) than anyone else.
I would always keep in mind that there is no such thing as “one mattress fits all” and any specific mattress may be the “best” match for a relatively small percentage of people, a “good” match for a larger percentage, and an “OK” match for a larger percentage yet but the only way to know for certain whether a mattress you end up choosing will be a “good enough” match for you to keep it (even if it isn’t the “best match” out of all the mattresses that you “could have tried” instead) will be based on careful testing in a store and/or your own personal experience when you sleep on it.
Many online mattresses (including the ones you mentioned) have a good trial period and return policy so you can try them in your bedroom instead of a showroom with little risk (outside of the time you spend sleeping on it and/or returning it if that becomes necessary or any costs involved in the return process) so if it’s not a “good enough” match for you in terms of comfort, firmness, and PPP you can just return it and try another mattress if your choice doesn’t turn out as well as you hoped for but once again you will only know whether it’s “good enough” and you won’t know whether it would have been better or worse or how it compares to other mattresses that you could have purchased instead that you haven’t actually tried in person. This is one of the disadvantages of buying a mattress online that you can only try “one at a time” vs local testing in a store where you can compare many mattresses side by side at the same time.
If you are considering online options in general then outside of the simplified choice list the mattress shopping tutorial includes several other links to lists of many of the better online options I’m aware of (in the optional online step) that include many different types and categories of mattresses that use different materials and components in a wide range of designs, budgets, firmness levels, and with different return/exchange policies that may also be well worth considering.
If you are also interested in some local options that you can test in person before a purchase then if you let me know your city or zip code I’d be happy to let you know about the better options or possibilities I’m aware of in your area.
Phoenix