Hi SkyP,
I think that the best advice I could provide would be to completely “reset” how you are looking for a mattress.
The best 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 including all the major brands such as Sealy, Simmons, and Serta or any mattress that uses low quality materials that are likely to soften or break down much too quickly or where you aren’t able to find out the type and quality/durability of the materials inside it (see the guidelines here).
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 PPP (Posture and alignment, Pressure relief, and 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, durability, and value.
Outside of PPP (which is all about how well you will sleep on a mattress) … the most important part of the value of a mattress is it’s durability and a mattress is only as good as its construction and the quality and durability of the materials inside it (which is all about how long you will sleep well) regardless of the name of the manufacturer on the label. If you can find out the information listed here about any mattress you are considering and post it on the forum then I’d certainly be happy to make some comments about the quality and durability of the materials and help you identify any potential weak links in the mattress. Without this information though it’s not possible to make any meaningful comments about the quality or durability of any mattress and if a manufacturer or retailer either isn’t able or willing to provide it to you then I would pass the mattress by because you won’t be able to make an informed choice and any purchase you make would be very risky and would have a very high chance of buyers remorse much too quickly after a purchase.
Again … I wouldn’t buy any major brand mattress whether it was a “deluxe” version or a “stripped down” version or anything in between because none of them would be a good quality/value choice compared to many other options that are available in the industry.
Once you get to step 3 in the tutorial if you let me know your city or zip code I’d be happy to let you know about any of the better options or possibilities I’m aware of in your area.
Phoenix