Originally Posted by
chefisaac
Anyone use this product to mount their PB onto their rack?
I've got them on most of my bikes. They work well but I would suggest a ziptie around the light to prevent it from hopping off. That's a problem with almost all light mounts. I've lost a few...and gained several

...lights due to this problem.
Originally Posted by
chefisaac
Would love to see a video or comparison in the dark but I know thats a long shot!

The 4DToplight is okay but a little behind the times. Since it's from Germany, it has no flash mode (not allowed) and it's not nearly as bright at the Planet Bike Superflash on steady mode. While losing the PB Superflash because it occasionally falls off is a problem, there is something to be said for the ease of removal. The 4D is bolted in place. You can't lose it as easily but changing batteries is a little more of a hassle.