Well, just got my system installed yesterday (X1 DVR, 3 regular X1 boxes) and man could I not put it down!! However, reading this thread is like a horror story, so I hope I don't uncover some of these problems over time.
Only thing I hate is the very BAD delay between button presses on the remote and it actually happening on screen. It seems to only happen if you hadn't used the remote for a while, but then it gets a little better. I did have one regular box 'lock up' on me where audio kept playing but the guide/overlay was just frozen on the screen. Had to manually hit the power button and all was fine when it came back on.
I read somewhere in this thread that one should use the 'Surround' audio option for AVRs. I have an Onkyo TX-SR608 running HDMI passthru and all that, when I changed to 'Stereo' audio was only coming from the center channel, so I immediately switched back to stereo. So I guess I will leave them all on that for a while...
Anyways, I am looking forward to keeping up with this thread. I am in Houston too and see that CaptainVideoJW is very active in here, so good luck everyone! I've just committed my life to television and after signing up for Triple Play with HD Premier, so has $250+ a month when my promo expires..