At last! Went through every level of hybrid bed in a box. This is the one! So well made. No edge sag. 
So comfortable but supportive. I’m a side sleeper and no more hip pressure and pain. I’m far from model thin, so it’s nice to know it stays supportive  under normal weight. It doesn’t bottom out or Divette. 
I’ve only had it under a month, but it seems to be the one I’ll keep. The gray cover is beautiful and textured. The only thing I would add is handles for moving, but I don’t plan on moving it anytime soon.