I come from a long line of Drift cameras. Currently have both the Ghost and the Ghost-S. In between my HD170 Stealths and the Ghosts, I used a GoPro Black Edition. Definitely don't get the GoPro! One of the nice things about the Drift line is the battery life. You get 3+ hours on a single battery. That means a lot on a bicycle as you're not stopping every hour to hour fifteen to swap batteries as on the GoPro. Another great thing is the rotating lens so you can mount the camera in whatever position and then rotate the lens to get the image upright.

I haven't tried any of the others, but Drift is #1 in my book. If you can get by without 1080P 60fps, buy the regular Ghost and save the $. I do record my rides in 1080P, 60, but I'm not really sure why. I guess because I can The downside is the larger file size and both 1080P60 and 1080P30 look great.