Dewalt 12 volt max LED. Clips to my Veto, has a magnet and the light head swivels in all directions. I often stick it on the side of the unit I am working on, or something metallic nearby with the light shining right on what I am doing. Battery life is awesome, and of course shares with my 12 volt max drill and impact (which is always in the Veto) so I always have 2 batteries wherever I am with my tools. Very bright white light.
I use the 20v one, I love it, very bright and alot easier then trying to old a light or use a headlamp
They told me to use the brain God gave me.
Now I'm an Atheist. Ironic, isn't it?
I am kind of a flashlight geek. I have been buying LED lights from dx.com. For $30 or less you can get something that would cost over $200 here in the US. They all use lithium polymer rechargeables also.
I also nabbed a LED module for my SureFire G2 and converted it to 16340 rechargeables.
There are a lot of other Chinese sites selling this stuff, but this is the only one I have ordered from. Shipping takes like 3 weeks though.