Some HDTVs now have USB ports. Usually they are intended for connecting to flash drives containing pictures, music files, or possibly updates to the TV's internal operating software (firmware). The exact functions of USB ports vary somewhat from one TV to the next, so do some research prior to committing to a set.

Minor: Comb Filter Type

Comb filters are necessary in analog TV to separate color and luminance information without losing too much detail, but that's not an issue in HDTV. The only time the comb filter comes into play is for analog TV reception or any signal coming in via a composite-video connection. For all other connections, it's out of the loop. In any case, the comb filters in flat-panel TV sets are routinely very good these days.

Flat-Screen TV Shopping Tips

All right, you've made it this far. Here are key points to consider before you take the HD plunge.