"Don't get sucked in by more power. AVR wattages are more marketing than substance."

This is very true; you can't really judge a receiver by the numbers advertised for its supposed "power output;" you have to hear how it sounds in a particular room you're going to be running the system in --- I personally own the predecessor of that 602 (I think you mentioned), which is the TX-SR600, and its "80 watts x 6" seems to fill the rather massive media room I'm running in right now once I get the volume up and going----so those numbers really mean nothing.

You already did the right thing by choosing an Onkyo; where in your one bedroom apartment is the system going to be in----the living room or bedroom? I am sure ANY of these models you listed will rock your listening space; if price is a concern, you cant go wrong with the "600" series of Onkyo's in their TX-SR line.