The Onkyo has DPLII and more power (100 watts/channel compared to HK's 80, while the AVR510 appears to have more features. What ultimately would win me over, is the sound quality of these two receivers. I don't have much experience with the two, and was only able to demo the 510, so I was wondering if anyone with experience could offer feedback on these two receivers? Also, how does Logic 7 compare with DPLII? Any ideas?