How accurately can a 7.1 receiver or pre/pro recreate a 6.1 soundtrack? I am trying to decide which way to go with my system. Is there 7.1 material coming? What about 8.1? If 6.1 was developed to improve rear sound image, how can a 7.1 system (with 2 rear speakers) recreate this better than a 5.1 system? I’m sure that it improves pans from front to back, but doesn’t this still leave a hole in the rear? I don’t want to buy a piece of hardware 2 or 3 months before a new format comes out.