Looking at the fog out my window this morning, I realized that the one thing that is really missing from my growing cycling gear collection is a headlight of some description. Now I'm well aware of the night riding scene that is blooming in NorCal, so thought I'd ask you guys what your favourite lights were? I'm not really thinking of a DiNotte type deal ($$), or looking at serious riding at night just now, but something good for visibility in the fog and some extra light around dusk.
I'm looking to spend <$100, for something that's fairly sleek, easy to attach/remove. What's the best bang for the buck from your experiences?
Edit: could also be good for starting centuries early in the AM