I had no idea it would be so difficult to buy a new mattress set, one that would be comfortable for at least a year! The Serta Firm mattress I purchased over a year ago has been moved to the guest room (had it replaced twice and each mattress sagged after a month and I am not overweight at all). This past January I purchased the C2 Sleep Comfort mattress (it's the one that doesn't show the numbers on the little remote--it was on sale). After 2 months I've noticed a foam rubber odor coming through the bottom sheet and mattress pad. Has anyone else dealt with anything like this? Gee...it used to be so easy to buy a mattress set and have it wear well for several years w/o problems. Is there a mattress set out there that is firm, won't sag and won't cost thousands of dollars???