I have used 100s of the Scat version, always been close on weights, usually need a little work to balance still though, with the rods bolts they come with i have gone to well over 8000rpm with them a lot and never a problem, the only possible advantage of the CB rod is the smaller bolt means less clearance work on case and maybe cam with 84mm stroke and bigger but lots of people like the bigger bolts in the Scat rods for extra security
cheers Richie