Originally Posted by
DiabloScott
I recommend TWO lights.
-you can run one on bright and one on dim
-you can point one up the road and one down
-you can run one on and one off to save battery
-they almost never run out of power at the same time so you'll always have spare light.
I like my Luminas.

Nice setup.
I choose for myself a setup that has worked very well and that is going with the Cateye Volt 1600.
What I like about this light is that I usually run it at either the lowest or second lowest of the three non-flash settings, and it lasts such a long time, that I can easily go a week before needing to recharge it.
If I had saved a few pennies and bought the Cateye Volt 800, it would have worked well for me too, but I would need to recharge it more often, and that irritates me.
Also Cateye's quick release system works very well, unlike the quick release system Moon and a few others have for their rear lights.
The Cateye Volt 1600 also has a day time flash that combines a constant 200 lumen with a 1600lumen flash thrown in, that lasts for many, many hours between recharges.