K, all of the receivers that you've listed have been competently designed and therefore amplify transparently without adding any sonic characteristic of their own. Axiom speakers don't have any unusual requirements that would make a particular receiver "best" for them. Buy the one(and you could certainly add others such as Onkyo or Yamaha to the list)that fits your budget best and has the features that you want.


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Enjoy the music, not the equipment.