I have a KS Sealy Posturepedic Reserve that has the memory foam on top.
It's wonderful!!!! I also have a QS Stearns and Foster pillowtop. My best friend wanted to be my new roommate the first time she ever slept on it. Said it was the best night's sleep she ever had.
I didn't pay anywhere close to retail for either mattress. There's an outlet place in Middle Tennessee called Sleepwell. They beat all the 'Mattress King' and 'Mattress Outlet' prices by a pretty good size margin. I think I paid less than $1k total for both mattresses.
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Good luck to ya'll!
EDIT: For the record, I'm not in med school, been accepted, or even applied. Just sharing what I have and love.