bigwill2 brings up a good point.

The EP350 is a great sub; a little pricy perhaps, and certainly overkill in the size room in question.(certainly a lot of fun if there are no close neighbors, however)

There was a review of the M3s with the EP175 a few years back that was quite positive. Although there are a number of other subs available at similar prices that may fit the bill too, and help keep the buget under control.

Going with the M60s is a sure way of getting a great start on a future system as well!

Ain't nothin' simple?!!
Rich.