High quality antenna AND high quality cable connecting antenna to TV. The digital tuner on your TV will be much better than the one on your converter box. That said, there are still differences between brands and models. So read Consumer Reports at your local library (or subscribe to the online version). Not perfect but better (and objective) info as opposed to the personal experiences from readers here. Then read buyer's comments on Amazon. 1080p, especially if you want to hook up to a computer – probable in the TV’s lifetime. Don’t put a plasma system in a bright room or a LCD system in a dark room.