I have been using this projector for about a year now on a Stewart 82" grayhawk screen. I am generaly pleased with this unit(except for the price of the replacement bulbs). Watching DVDs through the component inputs is pretty high quality with good color seperation. However, when I use it with my TV cable box (we have Adelphia cable using their Motorola digital converter box) with the composite video input (this is all that is available from the cable box, besides the coax)the colors are just all over the place. I cant adjust enough red hue to to rid the normally white colors of a greenish cast through the whole picture. Different channels exhibit very different colors and therefore need readjustment for almost every channel. I am undecided about whether this is just a cable box problem (I have had the cable company out a couple times and am told all the signals are ok and the picture is as good as it will get)or something that can be better adjusted soemhow within the projector. Is 1000 ansi lumens bright enough for good whites? Does anyone have a similar experience with this unit used with a cable TV box?? If so, any suggestions on how to correct it?