I bought one of these.. us based seller - under 55.00 with battery - helmet and bar mounts - a great deal. The battery is the only weak link.. you will get 3 hours of burn time in high mode. I like this one because it only has 3 modes.. high - low and strobe. easier to cycle though if needed. It is not 1600 lumens but will give you a solid 1000 lumens, plenty bright.

http://www.amazon.com/Cree-Xm-l-1200...s=Cree+Xm-l+T6