Refresh rate: The difference in image quality between a 60Hz LCD HDTV and a 120Hz LCD HDTV is tremendous; after 120Hz, though, refresh rate is really not so important. We've seen 120Hz TVs beat 240Hz TVs in our motion tests, because the 240Hz frame-interpolation algorithms create "judder" artifacts. Related:

Size: This is a big deal, but not necessarily in the way you think. Most people want the biggest TV they can get for their buck. However, if your living room isn't large enough to support a lot of space between your set and your couch, you might end up with an inferior-looking image overall. Your mom was right: You don't want to sit too close to your TV. With a bigger set, you'll be able to see the individual lines in the TV image. It's just like sitting in the front-row seats at a movie theater. Related: