Amoeba. I absolutely love this headlight. I have been using it for 4 years now. It's primary use is off road/singletrack at night, however, I also do road and cruiser rides with it. I have had nothing but top notch customer service with this purchase.The gentleman who builds them is also now doing taillights. I have not tried those out yet.

Amoeba - The simplest "light" form

If you are a member of Mountain Bike Review the gentlemans screen name is Scar.