I'll second Sixty Fiver... have been running the following on my tourer with 60 lux and daytime running lights and am very satisfied with the spread of the beam and it's intensity. Whenever I use my tourer in the city with this light, I have people telling me that I've left my front lights on (the four bottom leds + 20% of the main led), which means that I can and am seen.



I had to change my rear dyno light because of a capacitor fail, and opted NOT to get the brake-light function since I believe would confuse the already dazed and confused drivers where I commute. I ended up getting the following which cost next to nothing (around $18) and has a very bright light, seen for 320 degrees. It of course has a 4 minute stand-light function, but unfortunately no off switch, which I believe is needed when you reach your destination and don't want the rear light on when you've walked away from the bike.