I don't know about newer viscoelastic foam beds, but I've had the experience of buying several standard foam mattresses (due to life event lots of family was fl

I don't know about newer viscoelastic foam beds, but I've had the experience of buying several standard foam mattresses (due to life event lots of family was flying in) and there is a quality difference between the lower and mid grades. One would typically try them out at the showroom - it'd be really nice if they could let you sleep a whole night on one.