I have just bought the m60's and am VERY happy with the clarity and how "clean" the sound is at high volumes.

I use a denon 4802r to power them, and have some issues with it clipping out. ( wrinkles I'll have to iron out)

I'm very happy with my m60's, and my other axiom products.

Qs8's, vp100 and ep175

I don't think you'd have a problem with either decision

good luck

HT PICS