Please I need your help to understand if I have to wait until fall to buy my nect PJ. I' ve focused on BenQPE7700 and the similar Toshiba, but the contrast spec. does not convince me at all. How much more do I have to pay now and how much will I this autumn to get a 1280x720 with a Dark Chip onboard? Do you think that dark chip worth such an expense?