I have had Latex for the past 10 years. On the new boat, we looked at memory foam vs latex. We decided to stick with Latex after laying on the memory foam for about half an hour. The memory foam was about a hundred dollars cheaper. Due to clearance issues on our tri, we went with the 4" this time instead of the 5.5". We have no complaints. We are considering a 2" memory foam topper, but will wait until the new mattress is broken in a bit to see if it softens up. We have compared closed cell foam, to latex, as well as a few other options, and nothing beats the latex. The other advantage to the latex is that you can save allot of money
a standard size at the local mattress store and cutting it down with the electric
knife as was mentioned before. Our full size 4" latex mattress cost about $600 out the door. Last time we had a marine
mattrees made with Latex, it cost $2400 for a smaller mattress.