What's missing
The punch in the music which I am missing in denon. Also lots of setting and things to play around which I had in Yamaha RXV 473 are also missing. X2600H is definitely better than Yamaha 473 but still when it comes to music I feel Yamaha has that upper edge. I can't feel music they way I used to feel in Yamaha.
Yes, 3600 is an apt comparison but then I thought if at all I have to move back to Yamaha then let's consider a bit better range, although 1080 is 7.2 and 3600 is 9.2 but heard Aventage range is really good. Haven't auditioned it yet though.