I've got the onkyo tx sr600 presently and driving Polk rti150 mains, a Polk csi5 center, Polk fxi5 surrounds with an AR edge in rear center and an AR sub. I just don't think the Onkyo 600 has enough power for the setup (80w x 6), although it does sound good. Has anyone else upgraded to the tx sr702 and have you noticed a difference that is worth the switch. I'm also considering an Outlaw Audio (7100 with 950 preamp) I'm in a small room right now (approx 13x17). If I could be happy with the Onkyo 702, I would save a bundle over the outlaws for the time being. Any suggestions?