This brand hasn’t been posted about in a while. My boyfriend has the luxury firm and I like it. I feel like I’m sinking and have pretty immediate back pain in my current mattress (I’m 5’2’’ and 135). So I’m looking for updated thoughts and hoping to get highlights on similar options.
Hi Erossitch.
Welcome to our Mattress Forum. 
I’m not sure what you have already read but there is more information about Saatva and many of the other simplified choice mattresses in post #2 here and there is also more information about them in post #1 here and the rest of the topic as well. A forum search on Saatva (you can just click the link) will also bring up more comments and feedback about them. The first post in the simplified choice topic would also be well worth reading as well.
Saatva and other large “S” brands tend to use lower quality foams/components. “Lower quality” means that a foam material is in a lower density range than I would normally suggest in the durability guidelines listed here and there would be a higher risk of premature softening and breakdown than higher density and more durable materials. Foam softening and the loss of comfort and support that goes with it is the biggest reason that you would need to replace a mattress and isn’t covered by mattress warranties.
While Saatva would be a “better than average” quality/value choice compared to many of the mainstream mattresses made by the major manufacturers (which I would avoid completely) … some of the materials they are using are less durable than I would be comfortable with and for most people they wouldn’t be in the same “quality/value” range as many of the other options that use higher quality and more durable materials and foam layers that most of the members here would know about as a result of the information on this site. I would also be cautious about making a purchase based on some of “marketing exaggerations” on their site.
I’m also 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 (Posture and alignment, Pressure relief, and your own Personal preferences) 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 you will sleep), durability (how long you 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.
While nobody can speak to how any specific mattress will “feel” for someone else 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 materials and components to the durability guidelines I linked 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.
NikkiTMU