>>1004832Get a dynamo hub and light if you can afford it. They are so worth it.
I have an SP dynamo that I am pretty fond of. They aren't as expensive as the Busch-Muller dynos, but they meet the same standards set for German bicycle lighting (super stringent regulations about power output at low speeds or something). A friend of mine picked up a Schmidt Dynamo cheap off of ebay, and it is also very nice. Having felt both my SP and compared to it a Schmidt Dynamo, I found them to be pretty indistinguishable. Get whichever you can get cheapest.