I'm looking into setting up my first HT. Recvr + Spk budget is around $500. Based on posts on HT forum and Ckt City web-site, Onkyo HTIB HTS650 entered my final short-list. Before going for it, I wanted to find out if I could get an equal or better performance from smaller speakers (the Onkyo ones that come with HTS650 seem bulky). Would I get same or better audio quality with Polk RM6000 or JBL NSP1 ? How does Polk RM6000 compare with JBL NSP1 ? (Also, what's the difference between Polk RM6000 and RM6005; JBL NSP1 and NSP1 II ?) Thanks in advance for any advice. Joe.