Didnt see any comments on the Planet Bike Alias so I will add mine. I have been running fro 2 seasons of Darkness now and have no real complaints ('cept that someone pinched the first one). The light output and pattern is good. The lamp assembly is light and compact. The low output setting lasts a few days or more. The blinking mode is bright and effective in high traffic areas. Before I bought it I researched thoroughly and while I now dont remeber all the pro's and con's of my research, I am happy with my decision. When it was stolen I didnt hesitate getting it again.

There ya go.