I have spent the last month looking at receivers and have narrowed it down to these 2. My usage will be 50/50 music/movies. I just recently purchased a DVD player so most of my library is VHS. From what I have read I think the logic 7 on the H/K would be used allot. I probably would not be using 6/7 speakers any time soon. I am leaning to the 520 but if you have a better suggestion I am all ears.