I run a mix... I prefer using a dynohub, but on bikes that don't have a dynohub or bottle generator installed yet, I have a few battery operated lights around. I'm desperately trying to eliminate battery lights from being used for headlights. At this point, all but one of my bikes have battery operated taillights, but that will be changing as my fleet evolves.

Speaking of dynohubs, lookee what arrived on my doorstep this AM.


Sturmey AG - 1 by Sallad Rialb, on Flickr


Sturmey AG - 2 by Sallad Rialb, on Flickr