Thanks for the reply, Wesley.
FWIW, I had severe colorbanding on my HLN 567W after they replaced the light engine the first time it went down.
After a couple more attempts to get it right, it has been flawless for about a year now.
But as soon as my extended warranty expires, I'll be in the market for another set...hopefully something like one of these, only bigger....
EDIT: I mention the HLN only to say that color banding was the result of a bad light engine, or very poor factory calibration, because the replacement fixed it...Don't know if that's the case with these. Hopefully a good calibration can sort it all out.