I've tried finding a similar thread before posting this, but was unsuccessful in my search.. (probably too old anyway)........ (the thread i mean)
Share your experiences with the Gel, Foam, Rubber, Leather etc etc variants that are out there.
As for my own experience i used to have a Foamy one but threw it away because it was too old and kinda dirty (hard to clean after a few years of usage)
It served me well and it wasn't totally squashed as you would expect, it stayed in relative good shape..