First let me make clear that the handling on my R3 was already much better than stock, due to the forward mounting of my handlebars, and the riding position dictated by my rear-rear sets.
The CF wheels have further improved the handling of my R3 way beyond my expectations. I am VERY, VERY impressed with the huge differences they have made in much lighter & quicker steering, improved acceleration, way better braking, and all-round sheer ride-ability. Everything about the bike is more sensitive... steering, throttle, brakes, and body weight shift. I do not exaggerate one bit when I say that the bike now handles as if it were 100 lbs lighter. My R3 now weighs in at 660 lbs... but handles like a 560 lb sportbike.
In conjunction with the stickier Pirelli ribber, my R3 now is "flickable". It may not flick side to side quite as fast as my BMW K1200S, but it's ****ed close. This is due entirely to the CF wheels, as it would never approach this level of handling before. The differences in the bike are as great as adding TuneBoy with 3 filters and Jars, or as in installing a SuperCharger. The reduction in unsprung weight makes that big of a change to the character of the bike!!!
I'm sure there'll be many out there that won't believe me, but quite honestly, I'm FKN amazed at the difference. I can only say, wait for more reports by others... or try it yourself.