Originally Posted by tarwheel

I have a Shutter Precision PV-8 on my main commuter bike, with a B&M Luxos headlight. It's a nice combination and works well. However, to be totally honest, I am just as happy using my Light& Motion Urban 850 rechargeable light. The brightness is about the same and the L&M light was much, much less expensive. It also can be easily swapped among my bikes and is extremely light weight. Save your money unless that is not an issue and you have compelling reasons to own a dynamo light system.