My brother in-law just hooked up this system yesterday. His plasma is only 720P, but the installer set the 622 to 1080i. The 622 is connected via hdmi to a Denon 2807 receiver, as is the Denon dvd player. The plasma is connected via hdmi from the Denon receiver. I don't like this setup because he can't watch tv without the receiver being in use..........but it is his setup. The main question is should the 622be set to 720p to match the plasma or does it really matter?