Hi BillyIdol,
You are correct in that Tempurpedic has moved away from providing this info over the last 10 or so years, and many of their specs/components are now under ‘proprietary material’ umbrella, so it’s not possible to determine the quality –without additional info like thickness and density, it’s impossible to make many inferences on these mattresses. That being said, the only one who can determine what mattress meets your needs is you. As you say ‘the support and feel is there that I want and is the most important thing’. Your Personal Value Equation is, as it says, personal. Its’ great you have found a mattress suited to your personal needs!
Perfectly valid. Some consumers are happy with a mattress which they are aware will not hold up over the long run. You are aware that this is the case, and if you prefer ‘comfort over durability’ there is nothing wrong with that, the important thing is to be aware of possible shortcomings, which it certainly seems you are. I’d keep in mind is that at your BMI, 8-10 years durability may be an overestimate if the model you are selecting contains more than an inch or so of lower than 5lbs/cuft.
Well made latex beds can last for quite a long time, but as you ‘simply don’t like latex’, we’ll scratch that out. As you are a back sleeper, The 13" Tempurpedic Luxe adapt firm has a 2.8" HD Tempur foam and 2" Tempur HD APR+ foam and 8.2" Base foam layer, while the Tempurpedic Pro Adapt firm has 1.2" HD foam , 2" HD Tempur foam and a 7.9" base foam layer (all of unknown density). As a back sleeper only your personal testing will best tell which one feels more comfortable to you but also I’d make sure that it provides adequate back support and that your spine is in neutral alignment , Your needs are unique to you, and you have done a fair amount of leg work in finding a good match. Let us know which is your final choice.
Basilio