Anything that floats your boat. You have a superb pre/poweramp combination that will drive anything you like. I auditioned the VT200 with my difficult to drive Martin Logan CLS's and it sounded great. Get out here and listen to as many speaker designs as you can, and decide what you like. The ARC equipment that you have will in no way be a limiting factor in your system and is not sensitive to any speaker or cable designs that I am aware of. Good luck, as though you need it with your gear.
