I've got HDTV/DVR through RCN. They use Motorola 6412's, I'm actually on my second, which is working great. They've got CBS, NBC, ABC, WGN, WTTW, FOX but no UPN. Their HD Tier includes HDNet, HDNet Movies, CSN, DiscHD, and HBO, Showtime, Starz and Cinemax main channels in HD. Overall, I'm happy. I get occasional breakup/artifacts both live and recorded, on the premium channels, sometimes the locals. Definitely don't have enough space to record everything in HD that catches my eye. Instead, I just have to record the things I want to see.