Ben, since you are using powered subwoofers I will assume you are crossing your main's at approximately 80hz. If that is indeed the case that takes a huge demand off your receiver since bass draws the most power. I would not worry about 4k etc at this point in time and I would suggest looking for a upper tier receiver that is a few years old. There are plenty of people that have upgraditis (me) and sell off their used gear to finance the latest and greatest. I currently have a Yamaha RXA-1000 I only used a few months sitting on a shelf. I would surf craigs list or audiogon for a newer receiver. There is also accessories 4 less but that is a crap shoot in my opinion. There is a guy on AVS that sells AV gear and if you call him he will apparently give you some deadly prices. He goes by JDSmoothie and he is a asset at AVS.
