On the subject of the thread, I really am not interested in lights that aren't bright enough to see your way. The way I see it, "be-seen" lights really aren't bright enough to be seen with.
As far as rear lights go, I like the features on the radbot 1000, namely it's bright enough to be seen, and also has a reflector that meets Pennsylvania (and other) state minimums for rear reflectors. I hope never to use the reflector, but I figure I should meet state law.