I currently have a Harman Kardon 320 receiver, but as I upgrade to new speakers, I am beginning to think that the 55 watts/channel it puts out won't be enough, especially for speakers with a lower efficiency. The way I see it, I can either get a an external amp or a new receiver. If I went to an external amp, I found a good deal on a Harman Kardon PA-4000 amp (8 x 45 watts, or 4 x 100 watts bridged which is what I'd use). However, that only helps me amp 4 channels, and I am lookign for 5.1 sound. Would I then need another amp? If so, I guess I could get a Harman Kardon PA-2000 or another PA-4000 (only $150 difference between the two in case I decide to do 7.1). However, since I am in school and move my stuff in and out every couple months having to carry 3 big heavy pieces of equipment around around will be a pain, not to mention that they will take up more room when I am already space limited. BTW, the price on the PA-4000 is $400 if that helps. Alternately, I can get something like the Harman Kardon 7000 receiver that outputs 100 watts/channel. I imagine that the sound quality won't be quite as good as the separates but it would be a lot more convenient to carry around. Also, I could help fund it by selling my 320 because I will no longer need it. I suppose I could stretch for the 8000 but at $1200, I don't think I could put together the money. Also, if anyone knows of any relative solid (100 clean watts + ) 5-channel amps for about $800 I am open for suggestions. Please reply soon, the deal on the Harman Kardon ends Friday so I need some idea of where I'm going by then. Thanks!