at least 82 , 5007 or 3900 at least ....otherwise only changing the style , not upgrade .
they all have their own character.
try put in a simple way for you , thats my own experience ,fans don't beat my head .
dynamic :denon
detail :pioneer
sound field :yamaha
sound quality :onkyo
there's never who win who , only depends how you match with your speaker to cover their weaks and show their goods .