I have pretty much tried all tires, the M5B was ok, but the corner and grab on hard surgaces suck. Which is mostly North Carolina. I had it mounted on my CR250 and wiped out many times in the hard stuff, but would grip awesome in mud/sand and decent in grass. Good tire.
The Dunlop series are horrible on the rear. I have not found a tire that will last me a few months at least. The tire I have found the BEST luck with all, hard surfaces and soft, that lasts for at least 6 months on the 500 and a year at the least on any other bike, is the Kenda Trak-Master II. It is cheap, lasts forever, grips hard and is just my tire preference. I currently have it mounted on four bikes and as soon as it is time for tires on the others, I will mount it too. Great tire. That is my A+. The only downside is to the person behind you.