Because of the impending snow, I swapped out my Avid SD7 front V-brake (w Koolstop thinline pads) in favor of a Sturmey Archer drum brake hub. I originally wanted to run an Avid BB7 front disc brake, but there were too many parts and $ involved in a disc conversion. So far, I've been using the brake drum for two weeks. Stopping power is great, on par with my V-brakes on their best day in the dry and as good as the old Tektro disc brakes on my MTB in the wet. Additionally, the internals are completely sealed from the elements so I'd highly recommend this for all-weather commuter bikes.
Diamondback Insight 1 converted to single-speed Cyclocross
Turnigy 63-74 200Kv outrunner
EVLogix RC Throttelizer
Turnigy Sentilon HV ESC and Wattmeter
7S/16ah LiPo battery pack