I've just got the Night Rider Minewt 600 and everything seems nice except when I switch on the Daylight flash mode. I don't want to say it's bright but I swear I could signal the International Space Station from where I live. LOL
Seriously, is there a point where lights get too bright for commuting? There's an urban legend out that says some commuter from West Virginia hooked up landing lights from a small plane to his bike. The results turned night into day, literally.