Your room is 2250 cubic feet, which is about average, you probaly don't need the extra power handeling of the M80's (unless you want to be deaf in less than a year?).
If you are using them only for HT I think you would love the M60's. A great speaker. If however you also want to listen to 2 channel music (no sub) I would go with the M80's. The extra bass extension of the 80's (which is suble but audable, doesn't require a sub (for most music) IMO and my listening room.
Both are excellent speakers and you'll probably keep them for life. It was a tough decision for me.
Paul
Last edited by Worfzara; 01/19/08 01:00 PM.
