The Loewe 38" Aconda has the best image I have seen on ANY display to date. Thats why, when I had the chance, I picked up one from a client for $500. We sold a ton of them when they were still around, even at $3500-$5000. If you wanted video accuracy, it was well worth it.
I just had to lug the thing out to the living room to use a sit-in, while my Mits Diamond DLP is waiting for a bulb to arrive. I have the Xbox 360 hooked up VGA. It looks fine, but the setup in the Xbox doesnt allow you to output 1080i....640x480 it the only format it sends that the Loewe will sync too...but hey...it is what it is.
That being said, you could always use a component video switcher or an A/V receiver or processor. Of course this will lose you the ability to calibrate for each source independent of the others, but what else can you do?