I just set up my M80's two days ago, and here's my take on that.

Yes, they are a tad fussy to set up. The bass was really, really overpowering. I changed the toe in a couple of time and brought them a few inches away from the wall but it was still pretty boomy.

So I set my receiver to play the bass at -2dB, problem solved.

total time to adjust: 10 minutes.