for some reason i read something aout the sram dynos having a bad rep. take this with a grain of salt! i cant confirm this!

I sure enjoy having a dynohub, many people say "your lights are on, youll run out of batterys!" specially because the B&H Lights hold charge and remain lit for 1 minute (rear) and 2 minutes (front/a little led).

Try to buy the best you can, its worth it! I drool all over modern dynamo hubs, cause my 1975 Dynohub has a lot more resistance than the newer hubs....still a lot of fun.