If your crossing over at 80 hz or above there will be little differnce since both speakers share the same drivers. Plus you wont have to spend extra cash buying stands to get the speakers up at ear level the M80's are already there.If its too much just disconnect one tweeter and that is free. No need for an HP speaker if the bass is handled by the subs.

DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry