newbie here!

Anyhoo - i am going through the same process (replacing my Denon AVR 483 that leaked smoke).

What i found - the H/K AVR645 V7.1 has a self-set up feature complete with microphone to set up each speaker. You can over ride the settings if you want.

H/K puts out clean honest power and i thought the features were, for the most part, quite useful.

Harmon Intl reputation help close the deal.