1. THEY GRIP!
I've used Driven D3's for 6 years now and didn't think I would ever use anything else. I bought these because I wanted to do an off color throttle just for looks. I was very surprized with the comfort, I have large hands and these fill out my palm nicely. Haven't noticed any vibrations, so far so good. My other driven grips lasted a decent amount of time and I would expect these to last as well.