Hi Smytrous,
I don’t recommend specific mattresses or brands … only a series of steps and guidelines (in the tutorial post) that can help you find the mattress that is the best match for you based on all the parts of your personal value equation that are most important to you.
Unfortunately nobody else can feel what you feel on a mattress and there are too many unknowns, variables, and personal preferences involved that make each person unique for anyone to be able to make specific suggestions about which mattress may be the best “match” for someone else based on specs (either yours or a mattress) or "theory at a distance (see mattress firmness/comfort levels in post #2 here).
You can see some comments about their BBB rating in post #4 here and the posts it links to. You can also see some interesting (and troubling) information about the Better Business Bureau in this 20/20 article. The comments would also apply more to their online sales through Select Foam than to their Brickell Mattress store which is a different sales channel and hasn’t had the same issues with their after sales service.
Phoenix