I just bought one of the $12 trek variety last sunday because my old light always seems to fade so fast-- it was very bright, even at dusk, and I'm pretty happy with it. In fact-- lol, I got such a kick out of this. A homeless guy was checking out my bike on monday while I ran into a convenience store to get some gatorade. This guy happened to be in a wheelchair. Another customer motioned to me and said be carefull (I'm thinking.. wow, it would be something if the guy in a wheelchair took off on my bike ) So I go out and start talking to him, and it turns out, he was really interested in the blinkie! He wanted to get one for his chair, lol. I felt kinda bad for him so I gave him my old light (had attached it to my helmet as a backup)-- I thought, man, as much as it stinks to be in traffic in the dark on a bike, think how scary it must be to be in a wheelchair in the dark....