2yrs ago this was ahead of its time, I built it for only $80 + battery, optics are tuned for longer throw w/ the XPG leds. Was my 2nd light system I needed for a 12hr mtb solo race I did.
now you can get the niterider 750 for about $200, but it will be more floody. Get the best light you can afford, if your cheap like me then build it