I've had the VJF for about 5 months now and other than a few niggles [had rear brake light die on me which was replaced under warranty] gotta say the bike hasn't skipped a beat. I put bar end mirrors because it gets boring looking at my elbows. Had to drill them out to fit as the bolts from the standard bar ends were massive. Maybe it increased vibration at the handles a little but not by much. Used it for the MOST [P's test] and came through good. Thinking about popping the screaming demon exhaust on it, will post pics once I hook it up. Only issue is because it isn't so popular parts are hard to come by. If anyone has found a good source for parts feel free to post.