I'm purchasing a HT system, and would like to hear what people have to say regarding the HK AVS 225 vs. the 320. The 320 can be had for $399, the 225 for $359. Is there any significant new technology in the 225 vs. the 320? Are there any significant differences besides power output? I'm a HT neophyte, want a decent sounding HT system, but I'm not looking to build the end-all system. System will be used mostly for HT. Thanks.