This has been a great purchase. We've had the mattress for 2 years - as our own for a few weeks (waiting for the moving van) and now as the guest bed. All of our guests have commented on how comfortable the bed is with a foam topper. The bed is firm - as advertised - and does not dip or sag. Also, two people will not disturb each other because there is less bouncing than on a spring mattress. I highly recommend adding a foam topper to this - we have a 1.5" Threshold-brand, medium density topper. Without it, this mattress can be too firm in spots (shoulders, for example).