I am currently running a setup similar to your planned system (M22v2, VP150v2, QS4v2, and EP350v3) using a Denon AVR-790 and have nothing but good things to say about it. According to many people on these forums and several salesmen at the electronics store, the main differences between the AVR-790 and -890 is just features...no real difference in sound quality. I say that if the -790 has all you need, then buy that receiver and spend the extra $300 elsewhere.