DVD will look better on HDTV sets, but you will not get the highest resolution possible. DVD's MPEG-2 video resolutions and frame rates are very similar to NTSC formats. If you buy one of today s DVD players, it will not be able to play HDTV discs when they come out. Your antenna rotor setting for reception of HDTV signals will be easy to adjust. If your local cable company offers digital service, it is really digital cable .
Digital cable allows more channels to fit on the cable and requires a set-top box.
The present digital cable boxes show more channels, not higher resolution. The jury is still out on when or how cable companies will carry HDTV signals. They use proprietary digital technology. DBS systems currently deliver only NTSC-compatible SDTV signals. Check with your satellite company to see if they will have HDTV channels.