Hi susiegirl07,
Nest Bedding itself is one of the members of this site which means that I think highly of them and that I believe they compete well with the best in the industry in terms of their quality, value, service, knowledge, and transparency but of course this is about the company itself and not about any of their specific mattresses because most companies make a range of mattresses and some of them may be a suitable choice for a specific person and some of them may not be.
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 (Posture and alignment, Pressure relief, and your own Personal preferences) 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.
While other people’s comments about the knowledge and service of a particular 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 and I would be 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 (Posture and alignment, Pressure relief, and your own Personal preferences) 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).
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.
Of course many online mattresses (including Nest Bedding) 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 although of course 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 that you haven’t tried in person.
There is more about the quality and durability of the materials in the Alexander Signature Hybrid in post #26 here and a forum search on Alexander hybrid (you can just click the link) will bring up more comments and feedback about it as well (the search results that are about purchases from March 20th, 2016 and later will be about the current design of the Alexander Signature Hybrid).
Phoenix