After looking online and going over the threads, I've decide to get either the Yamaha 667 or 867, but need some info from folks that know more about these units than I do. One of the main things we want to do is play music off our network. I know I could go with the 667 for less and get Roku or Apple TV, but I've never had the equipment to do this before and want to make sure I'm not giving up more features by going with the 667. Am I losing anything else by just going with the 667 beside a little power? Any advice would be great.