I'd never buy a monsoon unless it was one of their highest models, and THEN I would buy something else.

Get the regular PM2.1. I'm on the forums and a person who actually got it said it had a TERRIBLE hissing problem. The satts have an easily audible hiss, even from 3 or more feet away, and as we know, it's not only annoying, but bad for you ears. Also, I like the PM2.1's bass reflex enclosure better than the sub found on the GMX series. More power. Also, better mids on the regular PM (on the GMX they sound very tinny).