The AVR-4308 is a great receiver especially at the current prices.
My interest in electronics is the same as yours. My system is used 75% for music.
Since music is your primary concern, have you looked at the Marantz receivers? I had a SR7001 (refurb form AC4L) before I bought my Anthem prepro. The Marantz was phenomonal for music but short on the extra features you get with the Integras/Onkyos/Denons. I'm actually thinking of selling my Anthem PrePro in favor of a Marantz SR8002.
Great speakers BTW. I almost got the Paradigms but at the last minute I got a deal on some Monitor Audios that I couldn't pass up.
What are you going to use as a source for music playback?