Brian at Razordog is awesome. If you don't care about warranty, Shoreline music has new ones in their closeout section for $325.
I'd say if you don't like the soundstage, yes the 650's are going to suit you better, they do games and movies just fine, as far as the Price there is always razordog deals, an authorized seller that selsl on ebay, you're still covered under warranty, since your invoice from paypal to him is your reciept. He keeps items like this listed as private also. Make him an offer, or wait. Many forum members buy from him. Never seen a compaint that I recall. good luck.