I own 3 SF's, started off with a G2, to which i added a UCL glass lens (which is now scratched up, i thought glass was supposed to be tough) and a G&P 3 watt LED module, then picked up a 6P, upgraded that to the P61 lamp, then i got the white A2 Aviator....
the A2 is my EDC, and the 6P and G2 now live in the center console of my car....