The Yamaha 5840 is on at Futureshop for $350 this week, it's a decent receiver. Out of your initial 3 options I would have to pick the Pioneer. I would take the 5840 over the Pioneer offering, but the Pioneer over the 5830. If you can swing the dough I feel you would be much better off going for the Pioneer 815 for $400. It really is a very feature packed and loaded receiver. Good luck with it all.