I commute home after 11pm every night .. I'd purchased a cygolite rover II led system where teh battery sits in the water bottle holder . .got it at
rei who happen to have it 20% off right now. But i like this system at this point ..plus have one of the planet bike lights for the rear lights .. thinkin i'll be picking up a 2nd .. the super flasher, or what ever its called, sometime soon