I need to shop for a mattress too. I am dreading it. I highly recommend getting one that you can flip. The one we have doesn't flip and I feel like it wears out faster. I had a pillow top mattress and hated it. My DD loved it and needed a new mattress and I gave it to her. It is so hard to compare mattresses because even if you shop the same brand from store to store they have different names so they are hard to compare. My DS highly recommends a Tempurpedic. You do need to consider the number of coils and the gage of wire they are made of. It is all so confusing you almost need a degree in mattresses to shop for one. Good luck.