I just switched to my second set of Michelin pilot road 4's after 10,000 miles. The rear was just starting to get a flatter center, but not much. I changed the scorpion trails after 5500 miles with roughly the same wear.
The pilot road 4's have been good enough to drag foot pegs when the situation calls for it, while being absolutely magical in the wet. I am 155lbs, so prefer to run the rears about 1-2 psi lower than the manufacturer recommendation. If I hadn't, I could probably get more mileage.
I don't know your riding style, but I would say give these tires a try. You will be surprised by the longevity.
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