Im looking at buying a 2channel setup, i am geting 2 rti-8's and a velodyne sub. Here is my question (im a n00b), the 2-channel amp that i like is the HK 3480 (120 watts per channel, pre-outs, sub out)...now i noticed that it only had left and right inputs, does this matter? i plan on listening to mainly music but i do watch alot of movies..i was thinking of changing this receiver because i wasnt sure if getting an onkyo 503 and setting it to stereo would be better because i could use digital coax or optical...are the left/right inputs going to produce the same/better quality than going the route above? thanks for any help!!!