I will buying one of these recievers very soon (probably this week) and need help deciding. I think I will just get the 520 to alleviate any worries, but if anyone has HK experience and knows their recievers features well, please give me your input and let me know which you would buy. Is the 520 worth the extra $200? I know they are supposed to be very underrated and I did read a review on the 510 which stated it tested out at something like 125 or 150 watts or so (I can't remember the figure but it was at least double the rated power), but I still can't forget that the 320 is only rated at 55x5. Is there really enough power in the 320 to push a HT? Also, I'm seeing on the HK site that the 320 has HDTV component video switching, but the .pdf file for the 320 says HDTV inputs and outputs. Anyone know for sure if the 320 has component video switching or not? If I remember correctly, the 310 didn't have it, so I'm curious if it was added to the 320 or not. Other than those 2 main differences, is there anything else different between the 320 and 520 and which do you think is the best one to get?