I think the hype about the harmonics is just something to talk about. I have never heard of any casualties that have been proven to have been caused by gear drive. I had a gear drive a few years ago. I liked it, for awhile. I had no problems with it, it worked fine. I got some good comments, and some bad. Some people liked it, some didnt. It's up to you, if you want it, go for it. Dont worry about what others say. I personally got tired of the sound after awhile, that's why I changed it. Remember, it's your ride.