- Comcast scrambles the HD signal and so it won't work with my Media Center PC; You need their box to get a signal and I'm not a big fan of strong-arm lock-in tactics
- The built-in DVR is good but limited in capacity
- $120 a year adds up
The negative is that I won't get HBO in HD. I'll live.
As part of this research I found a great site called HDTV Pub. You can put in your zip code and get reviews of antenna coverage and service providers in your neighborhood. I found a guy who bought a Zenith HDTV antenna and is getting outstanding reception in my zip code - hooray!