Originally Posted by SBinNYC

There's an updated version of the Sanyo http://www.peterwhitecycles.com/sanyo.asp and scroll down. I have one but have not yet put it through its paces. I've used it for city commuting with street lights. It's fine. It's got less drag than the old Sanyo and it does not slip. That is probably due to the rubber around the wheel.

I've done a few short total darkness rides and it's also good. N.B. I've used it with a 1w LED light as opposed to a 3w halogen light. I'd expect less drag from a 1w system than a 3w system. The 1w LED puts out a better beam than the 3w halogen.