I just made the plunge and spent alot of money on a new DLP Samsung HLP4663W, I don't have an HD reciever yet but the SD even from DISH looks great. My neighbor has an RCA 61' DLP and Dish and his picture is not even comparable to my Sammy. Although I don't see rainbows but am getting dizzy watching the tv. Is there an adjustment time for your eyes or am I just sh** out of luck. Any suggestions, I have tried tweaking the settings but still no luck. The tv is not out of focus and I am sitting about 13 feet from the set. Can anyone help??