I have both clamp on and weld on. I have not had a problem with ether, but I like the weld on better. It seems more permenant. I love my scotts, will put one on all my new bikes in the future. They are great in the rocks, and for high speed bar slap. They use oil, so they need to be maintaned, leek or not. Oil brakes down. I perferr the sub bar mount for two reasons, it rases the bars so it is more comfortable to stand ( I am not a tall rider, still more comfortable than stock). The other thing I like about it is you can still run a bar pad. You have to trim a bit out of the bottom side to fit over the stabilizer, but it does not compermise the "use" of the pad or the control of the stabilizer. After you put the cover on you can't tell it had been tuched.