I am going to spring for one of these projectors. But every time I think I have decided on what I want I come across something that scares me. Either it is rainbows, SDE or Vertical Banding. I know I can eliminate SDE with the proper seating distance and de-focusing. Get rid of rainbow by buying a LCD. But then there are the Vertical banding issues that seem pretty common. I really want something that can do HDTV. Will these projectors do 720p for me? If not I might as well get an Optoma H31 or 4805.