I have WS-55908 with lots of hours, have had no problems with it so far. Recently i switched to a HD cable box and ran componet cables to the the DTV inputs for the first time.
The problem i have is the blue seems to be missing on the picture.
No problem with the picture through the the component inputs. Just seems to be with the DTV input.
Mitsubishi Tech suport though the problem was with the cable box, the box worked fine on a differnt TV.
Note: i did not check the new component cables that came with the box with another TV or input.