I have a Pioneer PDP433CMX. After downloading the service manual, I discovered a few hidden service menus. One of the options was to select the HD source resolution. It was factory set to 750P and 1125I. After changing the setting to 720P and 1080I the picture was slightly better. Other countries use 525I/P,750P, and 1125I instead of 480I/P,720P 1080I.
