For me the most important thing to consider when buying a new mattress is comfort. I absolutely love my Serta Perfect sleeper queen-sized bed. I fall into a nice deep sleep and wake up feeling refreshed every morning. As far as mattresses, many people like firm support. I actually prefer plush mattresses. I invested in a new bedroom set about two years ago from Rooms To Go and I have no regrets. I just finished paying for it as a matter of fact.