I'm running a set of Metzler Lasertecs on my Sportster and I love them. The Dunlops ran out too quick. These Lasertecs are wearing very well and have excellent traction. I'm happy with them.
Don't get me wrong, the Dunlops weren't bad tires, they just didn't seem to hold up as well.
I don't ride too aggressively either (past that stage in life).