Exactly that. It felt so comfy, but is so expensive. Lots of positive reviews but only after several weeks. The more negative reviews (not many) were all after a much more substantial amount of time. Is this the case with all hybrid type mattresses, do they all sag? It's a lot of money and not sure what to so? Anyone got this mattress? Are hybrid mattresses just as comfy after 6 months/a year/ 2 years?