Which one of these receivers would you guys recommend? I have found them for about the same price, right around $480-$500 with the exception of the H/K 225. Is there a huge difference in power notice from the H/K 225 up to the 520? Really trying to figure out which reciever would work best for my speakers. I currently have a set of Infinity RS-5 for my mains and rears with a CC3 center. I would be using this reciever for 40% music and 60% DVD-Video.