I live in San Francisco and have Comcast. using a Motorola DCT 3412 I DVR, which I would guess we've had for 3 or so years. I bought a Panasonic 50" GT30 last year, and it has never looked decent on broadcast TV... even the HDTV channels look like they could be a little crisper. Could the box I'm using part of the problem, i.e. Garbage in, Garbage out?