I've been using the light and motion vis 180 rear light for well over a year. It is as bright as the cyrgolite hotshot 80 and has a better run time. But the L&M is 2x as expensive and works well really only on a seatpost; the cygolite is more flexible. As much as I like my L&M vis 180, I'd recommend the cygolite as well at this point.