Pros: Deep Bass, Clear Sound, Case
Cons: Case a little bulky
I'm not an audiophile at all, but I've poked around here some for purchasing decisions. I upgraded to these from a pair of SOL-Republics, that I thought were awesome. But comparing the two I found the M-80 to be "Brighter"? if that means anything. The SOL Republics sounded a little weak in the mid-range, to me.
It took me awhile to appreciate the sound of the M-80's. After comparing these to my SOLS listening primarily to old school R&B, (Bobby Womack, Al Green, etc) I came to favor the M-80's over my SOL's and put them on eBay. They are more comfortable, and I like the single cord. It's a wash on compact storage. I would love if they swiveled for storage like the B&W P5's.
Overall I'm very pleased