Chris I had m60's for 2 years in my 8,000 cu ft room and they are awesome. I do own the 80's now, but there is no reason to worry about the sound of the 60's, very similar to the 80's.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85