Whether it's a cooking show or a sports game, everything looks better on a sharper, bigger screen. If you've considered upgrading to a flat-panel TV, now is the perfect time to do so. But just like any other popular consumer technology, the choices are endless and daunting. The good news is that the buying process doesn't have to be too painful. The bad news is you'll have to pry open your pocketbook to get your ultimate dream model.