[fancyfish]

I’ve found it depends on the position mainly. The more you thrust vertically (cowgirl, etc), the less satisfying due to less bounce. On the other hand, foam is better for digging in for horizontal thrusting (doggy, missionary).

This is why about 65% say foam is worse for sex than springs, while ~35% say it’s the same or even better.

That said, I just prefer foam for sleeping. Much more comfortable and I wake up feeling more refreshed with no back pain. We keep a separate guest spring mattress bed for sex (and obviously guests). We bought it a year ago and our sex life has never been better but ymmv!

[aulin]

> foam is better for doggy

if we're talking about knees on the mattress, I'd say it's still worse... the more cushioning the more the blood flow is restricted, the faster you'll get weak and shaky knees. Just like a too cushioned bike saddle is bad for you crotch area.

[MiddleEndian]

Remember though my comfort layer is buckling gel so it has less direct contact than regular mattresses!