OP, recommendation is to really find a light that has the right balance of features you want. Beam pattern was important on my list as I need peripheral vision on single track and not blind on-coming people/cars. I also like an all in one unit with out a separate battery to mount as I swap often between bike and less things to carry around when I lock it up when I'm about. I have a light & motion Taz 1200 which fits the bill, but it's not perfect with an average/low run time. I'm not advocating to get the Taz, as the cateye bobones suggested has the same output and is cheaper, but the beam pattern isn't as wide. A friend use magicshine 880, which is very bright, but as it's designed as a trail light it can blind other road users.