BTW: I don't demo all in one units, but for what it is worth, I have loved the 3 years of using my Yamaha Receiver. It's options and power are top notch.
Friend has a little cheaper Yammaha surround sound setup and it sounds nice, but my parents just bought Onkyo's top of the line reciever and have mostly JBL and Klispch speakers and I would take that in a heartbeat, but just not the price tag, lol!
All of the higher end stuff from Denon, Onkyo, and Yamaha are going to be awesome products. But, there still are little things that set time apart from other receivers.