I'm getting ready to purchase a new receiver and both the 520 and 325 are in my price range. I've been comparing features, etc. ad nauseum. Can any owners, or others familiar with these units offer any advice? The receiver will be set-up in a smallish room (16x18) and will be powering 2 Dahlquist QX8's, 2 Dahlquist QX4's and the 50 series center channel. Overall amp power is not the most critical measurement for me. I want to have something I will be happy with for the next 2-3yrs., using it as my main HT receiver. Thanks.