Hey Sonny and Jason,
I'm in Encino 91436 and I've had HD from Adelphia since March and it's been great. You're right about the cost of the Direct tv equipment, and there's also the hassle of installation and the need to have a sat box on every tv. The best thing about cable HD is that you get the broadcast network channels through the cable. Currently, Dtv doesn't give you the high def broadcast network channels; instead you have to put an old-style antenna on your roof which may or may not work. Living in the hills, I figured it wouldn't work. I've read that the satellite picture quality is better, but I can't see the difference (compared to a neighbor's). Overall, the cost and convenience makes it worth your while to wait for Adelphia. I also found that they were not overly inaccurate about their predictions about when they'd provide some new service (HD service, adding FOX HD, adding ESPN HD). Currently, I'm waiting for them to start DVR service via their Moxi box in my neighborhood, which they have been promising for a few weeks and which surprisingly will cost only $3 more per month.