I've recently realized that my forks are a little too narrow for a hub dynamo, so I'm going with Plan B, a bottle dynamo. But I know nothing. They seem to range widely in price from around $10 to up near $80, and I don't really know what I'm looking for as far as what makes the difference.
Any bottle dynamo recommendations or warning?
Also, having read a number of threads on lighting options, I get the impression that a DIY LED system will give me much more light (i.e. "to see" light) for around the same or less $$ than a halogen set-up. If that's the case, that's probably the way that I'd like to go because I like a good DIY project, but, as far as wiring electronics goes, I'm starting with a clean slate knowledge-wise, so if anyone has any references to direct me to or pointers, they would be much appreciated.
In particular I'm wondering what kind of set up I need to keep my lights powered during a few minutes of stop time. I love the idea of having access to light without having to recharge my battery daily, but I don't like the idea of being plunged into darkness every time I stop, particularly at intersections, where I'd like to remain visible.