I was a big fan of Audessey, which the Onkyo has.
The improved feature set I'm talking about is basically a more modern version (wifi connectivity, bluetooth, more built in audio streaming apps, etc.) I'm not so concerned about features. It's nice.
Ultimately, when I dim the lights and crank up the volume, will I know that I have this receiver instead of my old beloved Denon 2312 and will I be disappointed. I don't care how hard it is to set up or anything else.