Guys in 200gp run KR825 or the small Avons. Some people run the KR825 on the front of 350's.
Evidence seems to point to the Dunlop being a bit better in the dry, and being lighter....and the Avon being considerably better in the wet and good in the dry too.
At least the dunlops haven't been good to me in the wet....but I love them in the dry. On a light bike, with their largish contact patch, and very little tread they don't behave well in the wet like the Avons with their smaller patch, steeper profile and lots of tread.