I got over 31K out of my D408F and over 21K out of the D407, no way I'm changing brands. I picked up two new American Elites from Dennis Kirk last month for $260 shipped! I want to see these new Michelins double that kind of mileage, yeah right.
Michelin has dual compound tires but according to their website they don't make any tires for H-D touring bikes. They do for Dynas , Sportys, VRods and such.