Okay so i've narrowed it down. These receivers are at the same price, both sound great but i can't listen to them side by side to really check out the difference. This is a lot of $ for me so want to get this right. This is primarily for music (everything from blues to hip hop to dirty rock and roll to clean electronica)but also movies. Buying the 602's and a 600centre. Any advice, all opinions devoured.