I have a Turbo and a Cygolite Hotshot. At the risk of hijacking this thread, I'm going to point out that the Hotshot is currently $28 on Amazon WITH free shipping. The PBSF's are cheap enough to get two and space them apart on a bike, like sjt78 says; if you're considering the Turbo you might as well pay the extra $3-10 and get the Hotshot, the only advantage of the Turbo is that you can get an off-the-shelf rack mount for it.