We have a hybrid type mattress with innersprings with high density foam and a bit of latex. I have a latex topper on my half, so my half of the bed is about 2" taller than my husband's. The mattress is called "Big Fig" and it's for heavier people. We're not in their recommended weights (both DH and I are over 200 but under 300, and it's intended for people 300-550). BUT, we still find it comfortable and it's the first mattress we've had that didn't start sagging either in the middle or on the edge. I find it uncomfortable without my topper since it's pretty firm, but DH could sleep on a board.