I've been using an Urban 500 for the past year and it's a great light. It's my second L&M light, the other a Stella 300, also excellent. L&M had some initial firmware problems with the Urban lights, but they handled warranty issues very generously and fixed the problems. They also gave me a free Viz 180 taillight, but I ended up selling it because I couldn't find a way to mount it on my bike. It's designed to mount on seatposts, but mine are blocked by seatbags.