Ok, this gives me some good direction to take. I think I will end up going with the stem mount. Do some of you have the stem mount with the ball, and others just the flat mount you have to attach velcro to? For those who don't have an actual MOTORCYCLE gps with anti-vibration and all that built in---how has your Garmin/other unit held up on the stem mount/velcro during long distance riding (like 1000 miles) with the vibration? My bf is concerned with the vibration causing damage to it.