My friend is selling all of his audio equipment, and I'm considering picking up his receiver, the Sony STR-Dh 520, for very cheap. I was wondering what kind of speakers I could get with this? I am not sure how powerful that receiver is. When I went to the store I saw a pair of Monitor Audio RX6's on display and they sounded nice / were in my price range, these were the ones I was thinking about buying. If I were to go very cheap on the receiver and get these rx6's, would the receiver be good enough to power them? Of course sound good too!