It's hard for me to understand how three LED's(nichias?), even severely overdriven with a great reflector can possibly provide enough light for normal bike speeds in the dead of night. Could they be the new Nichias 10X ?
Yes, this is an EXCELLENT product for commuters, etc. that need long battery life. This light is not meant to be used to "see" the road, but more for cars, etc. to see you. I've seen this light in bike shops before and played with it a bit. It is BRIGHT! But bright in terms of being seen. It can't really throw a beam. For that, try one or two luxeons. Actually, I'm using one luxeon right now and it is bright enough to see the road at night.
I got this one today...... The beam is a little spider webish as a result of the reflector. One of the LED's is fluttering. I doubt that it could handle a fall of the bike and I still won't use it for that purpose, but I like the removable the bike attachement and I will find a use for this somewhere - not sure where yet though.