I gotta say, I was super skeptical about this bed... especially since I was buying it for my 85 year old Mom, who's been having a lot of shoulder and arm pain at night (she's a side sleeper); to the point that she told me she'd been waking up crying in the middle of the night... and getting horrible sleeps altogether.
So far, she has slept straight through her first three nights on the bed and she loves it... it's firm and supportive, but with just the right amount of give in all the right spots.