I have a Cygolite Streak 350. It has two flashing modes. One is an alternating on-off mode, and the other is called steady-flash. The latter has the beam always on at middle intensity and then it bursts to high intensity. You can see by it, and the flashes are not distracting to me. When I see others using this mode, I notice them more quickly than with a steady beam, so it seems like a very nice mode. The Streak is small and light.