I bought one of these. Basiclly because I'm a cheapskate. But I really like it. It only has on and a single flash mode (which is what I use) but it's great. Bigger then you might think, it spans the entire width of my rack. The mounting tab on my rack is vertical and this light mounts horizontal, but I got it to work without any additional hardware. Best $11 I've spent on this bike. Let me know if you want to see pictures of it.