Cool! If your friend is willing to let you try some of his gear then I would definitely take him up on it. However, see if you can arrange it for the time you have the M22s for a 30 day trial period as well. That way, your comparisons can all be done at the same time.
I never heard the Heresy's but I have yet to hear horned speakers that I like. Maybe it's subliminal but they always seem to tire out my ears quickly with what I unprofessionally describes as being a bit shrill over a long term. I have heard other Klipsh speakers and still prefer the Axiom sound. However, to be fair, they were in different rooms, environments, etc and hardly a controlled listening test. I'd like to have your opportunity to hear them all in my own home.
