I have a few Surefire lights (L1, L2's, 6P, G2's, U2) & Streamlights (Poly Stinger, Poly Tac, Knucklehead, Stylus Pros). I keep SF stuff in house & cars, the SL's do the dirty work @ shop & in garage. Always have a Stylus Pro in my pocket @ work & use it frequently throughout the day. I think...