Green laser & light, positive click adjustment and battery versatility?

I'm thinking Streamlight. They're in PA but won't sell directly. Pyramyd Air doesn't have anything worth buying as far as I can see. Probably Allen wrench to adjust and they're all junk.

What dual green laser & LED are you running? 
I'm not sure I want anything that needs to be charged or doesn't accept AAA in a pinch. Long run time is nice. No need to blind any raccoons or Yotes. Just wondering around woods maybe. The good Streamlights seem to start at $200-$400

Lithium or Nickel Cadmium? Thoughts?

It's for a Vulcan but I'm looking at BP17 or Caiman, Leishy, etc.