I just finished a hitting session with the M 6.0. It has a very similar feel to the rest of the new line from Dunlop...it's fast, maneuverable, and solid at contact. This particular one felt VERY STIFF to me...maybe the stiffest of the bunch. What that results in is super solid, forgiving on the off-center hits, and a super lively stringbed. For me, the racquet felt a bit too light, and I would have liked it a little softer feeling for a little more of a plush sensation at contact.
I'd suggest it if you're looking for a "tweener-player's" frame (a la Pure Drive or BLX Juice) that is super light and easy to swing, and crisp/stiff feeling.