I've had a number of the EL300 models. Seems like good light for the money (I ride in the dark at least half the time - however, I'm rarely in pitch dark).

One big problem is that the mounting device keeps braking the connector on the light. It will chip off at one end on one side, then the other side, then the other end starts to go. You end up with a little section in the middle that you hope won't break too. Fortunately, my LBS kept replacing them for me. I eventually got a more expensive (and slightly brighter) EL500. It has exactly the same mounting system, but so far it has never broken. I assume this has to do with how everything balances - maybe creating less stress.