We bought a Simmons Black Label Rosalyn about earlier this year. Both sleep great for months. Now I'm tossing and turning, and waking up with hip, arm, and back pain. We liked our firm mattress, but it's settled Hard (capital H). After some reading, I think a 2 inch Latex topper might help. My boyfriend sleeps hot and sweats at night sometimes, so memory foam is out. Does a 16-18 ILD  2-in latex topper (dunlop process) sound about right, or better med-firm 28 ILD? I'm 5'6" 120 lbs, and boyfriend is 5'10" 210 lbs, both back/side sleepers. Sleep Warehouse has the 2inch latex at $269 for 16-18 ILD and $299 for 28 ILD. Foam by Mail offers 2 inch Talalay 20 ILD for $209, and 32 ILD for $214, although based on another poster's pics, it looks like they have some quality issues.

Any suggestions? My back, arms, and hips thank you.