Hmm, good question, Greg. I think either product will give you certain advantages. On the one hand, you can't beat a good tower for two channel listening. On the other hand, a good sub is a must for any home theater system. Which do you prefer?
I'm not a huge fan of running a sub when I listen to music. That is just me, though, and there are others on the board who prefer running the sub. It all boils down to personal preference.
For my home theater, though, I don't think I would survive without having a good sub. Really brings a visceral feeling to the movie experience.
Unless you're room is cavernously big, the M80s should handle the bass well.
