Very late to the party here, but I just picked up a free TH-50PZ700U to replace an old CRT in the master bedroom. Tweaked the settings to match a very old CNET review, hooked it up to DirecTV using HDMI, and it looks great for a nearly 6 year old TV! It doesn't seem to sync up at 1080p with the DirecTV box, but that's no biggie given the limited content at that resolution.
The only issues are that the TV didn't come with a stand, and there are a few scratches in the coating and/or screen. The TV is thick enough to stand up on its own, and the scratches aren't visible from viewing distance, so no complaints, especially for the price!
Haven't read all 10,000+ posts, but is there an easy way to check the number of usage hours on these sets? Just curious to see how used & abused the set is.
[EDIT] Figured out how to get into the service menu to check the usage. Looks like it has 20,197 hours and 588 power cycles, so it's very much used & abused. The set came out of a corporate conference room, so it was probably left powered up for days on end. No sign of burn-in, and the picture's still decent, but not sure how much more life the set has left in it.