I can only hold off the drywall for a few more days. I was planning to pre-wire for a center rear (6.1) but I am starting to wonder if this is a good idea and maybe I should be setting up for 7.1. At this point, i'm probably looking at buying a Denon/Yamaha/Marantz receiver for around 1000. For that $, I dont think i'll get 7.1. So, if I wire for 7.1 and buy a 6.1 receiver the rear center will not be "centered". The room is approx 20x20. The surround speakers (direct radiators) will be on the side walls, about 4-5 feet behind the seating area. The rear center speaker (or speakers!) will be in a bulkhead at the rear of the room, around 5-7 feet behind the seating area. They will be the in-ceiling type. If money is not an option, I'm guessing I should be wiring and buying both rear speakers to allow a future upgrade to 7.1. But, since i'll be buying a 6.1 receiver now I am concerned that the results may be poor with only one of the two speakers being used. What do you guys think?