Yeah, my gut's telling me the Yammy will do fine.

I'll report once I get the spkrs.

I lamented over the same thing Argon...M60 vs M80.
My room isnt even that big, so initially I thought the M50's or 60's will be fine. But I finally decided on the M80s because I really dont want to miss out on the differences in sonic and sound quality, and it's only an extra $340 (only $170 more per spkr).

The M80 has one more tweeter and one more mid range woofer than the M60, you have to figure it's going yo make a difference.

The best thing to do is really audition each of them for yourself. I just didnt have the patience, I want these bad boys already!