New Mattress Anyone?

If your like me I hate shopping for home furnishings. I really do need a new mattress but am too lazy to go out and get one. The one I have was my grandparents that they got just before they both passed away and it's been a very comfortable one but I have to say that it's just about time to get a new one. I've flipped the mattress over enough times as it is but I just can't make up my mind what kind of mattress I want to get. I would love to have a Temperpedic one or a sleep number bed but that's just about it that I can't decide on.