I've been enjoying the 'simple' life, ie: few cables and boxes, for quite awhile now. There is certainly something to be said for great sounding simplicity. Of course, playing with toys on the level of Karan make simplicity all the easier to embrace. :D
I'm not sure how much assistance I can be with your query, as I have never heard the Ayon nor the AMR mixed with the Karan integrated. I've only heard the AMR for a few hours, and that was in a completely different system. However, in the short time I was around the piece, it struck me as a very good player that would form a great match with the Karan - giving the integrated just that extra bit of harmonic spice it needs to get down and "boogie".