I can't speak to that as this is my first set and I'm only 2k miles into them. Tread life will really come down to your riding style, my Dunlops were breaking traction and thus getting eaten up faster than these. Generally speaking harder compound will last longer if it can grip in the conditions you ride. The Me880 compound is similar to the center(firm) portion on my Michelin pilotpower3 from another bike, and more soft than the stock Dunlop.
The main point was I suggest the tire profile: the 120/70 front makes the bike more responsive to me than the 130/60 that was stock, and the slightly larger rear may help keep planted under throttle.
My reasons for the Me880s were 1-softer compound, 2 better profile, 3-both front & rear are radial construction; I'm hesitant to mix bias-ply and radials which is what stock did. In the 2000 miles I've used them, the front performs as described above and rear plants/grabs better than stock. I haven't felt my tail end sliding out on me in curves since the change; how much of that is attributed to compound vs size will have to wait until I run out the tires. Hope that helps