I've been riding for a few years with L&M Urban (mine is 800 lumen... I normally have it mounted to my helmet.) Great light. However, I love having a dynohub on a commuter. I bought a pre-built wheel with a cheap shimano dynohub for $99. (the light's were more.) Probably my best purchase ever for my commuter bike. I never worry about batteries, recharging, and they are on and visible anytime I'm riding the bike. Might be something you want to think about now... or later.