It's a shame the XPA-2 has such a bad rep with the M80s, it's fine looking amp at a great price.
Not to worry, the RPA-2 is only $699, and has none of the issues the XPA-2 has with speakers. And if you believe the reviews anyway, has increadible sound and still pushes 350 watts of power to your M80's. And as efficient as they are, I'm assuming 350 watts will be PLENTY!!!