A mate bought one of the screw on types, and whilst it does hold the throttle slightly better, he only uses it for a couple of seconds at most anyway, so if you only want to use it for a few secs, then you could save $30. Having said that, I snapped my first go-cruise when removing it from tapered BMW grips. It went on simply, but snapped coming off. Not saying they are crap, but you need to take care when removing them. I have them on Oxford heated grips now, and no problems taking it off, not that you need to.