Upgrading TV Apparati For The Home

I guess everyone has heard about the digital TV changeover in Feb. Luckily, I am protected by having cable, so I dont' have to worry about it. My non-digital TV is still working well, and for that I am grateful. I do want to buy another TV for my bedroom, but can't do that until after I take the bar exam again. The question is what size of TV would I get, and where would I put it? I am going to have to look at tv stands and figure out what kind of set up I want to have.