I just placed an order for a Denon AVR X2100 as an open box for $540. The thing I am wondering is should I have went with the Onkyo TX-NR636? I have read reviews on sound and vision and they really rave about both of them. I notice the Onkyo has HDMI 2.2 and other than that similar specs but for $90 less. How do the two sound back to back? Denon has the better Audyssey also. Should I switch my order?