We recently bought a Sealy silver hybrid. The top of it is extra gel memory foam and then the regular springs (which you don't feel at all). It conforms nicely to your body while still being firm.
However, I think I'm allergic to it. After about 2 months I got this skin rash. It's okay if I keep moisturized, but keep it in mind. I've read that others get watery eyes and runny noses.
Other than that I love it

.