Originally Posted by ItsJustMe

Hey, any light is infinitely better than no light. I'm not dissing it, it's probably a better light than what I use as a backup. I'm just saying, don't think that because you're riding in the city, that there's no reason to get a bright light.

I've ridden in to work with REALLY pathetic little lights, less bright than what the OP has. It was fine when I was out where there were no other lights. But when I get into town where there are other lights and I'm on such a light (years ago before I had better lighting, or if my main light fails now) I assume that NOBODY can see me and I'm riding with my slam-on-brakes reflex on edge whenever I'm near intersections.

FWIW, I used to use something that was pretty close to that - an MR16 halogen spot and a 12 volt lead-acid battery. It cost me about 8 bucks to make the light. The battery would have probably cost me about 12 bucks but I had one lying around (and they throw them out at work all the time for alarm and safety lights, still with enough life in them to run a bike light for an hour). That setup cost me about $15 total with a few connectors, and it was really quite bright.

The MagicShine light is much brighter though, and weighs a lot less, though it is $85.

One thing that really helps if your main light is weak is if it has a flashing mode. I usually switch mine to that if I have to use a dim light.