There's several people here that have used them. I also spoke with Dragonslayer (from the Dragon meet with the Uly and the yellow XB9S). He runs them hard on both of his bikes up and down the Dragon like a madman so IMHO, if they're good enough for him for street use, they're good enough for me. If you plan to do trackdays, you may want to stay with the more aggressive tires on the left side of the chart I posted. They also have a Road 3 that's not shown on the chart. It's a step above the Road 2 but from what I've read, it's mainly in the wet traction performance department which wasn't high priority for me.