This is the probably the third or fourth Sealy mattress we have bought over the years - we have never been disappointed. This particular purchase was to replace the 30 year old mattress we have had since we were married, that had been relegated to the spare room - it needed replacing !
Our current mattress in our main bedroom is a king size posturetech Sealy mattress which is extremely comfortable and we thought any house guests deserve the same. Both myself and my wife have various arthritic joints and the mattress gives good, comfortable support when sleeping.
I have slept on the new mattress a few times now, and would rate it's firmness as definitely the firmer side of medium, rather than the 'medium' stated - but I have always preferred a firmer mattress so no complaints from me.
To sum up, a well made mattress, reasonably priced for the quality, and most importantly, comfortable and supportive.