Thanks for the review. I've been interested in those lights for quite a while. They sure have a great reputation.
I'm also trying to standardized my lights, but to AA instead of 123. My GPS and portable radios use AAs, but more important is that I have two different solar-powered AA chargers that work great. I have a lot of other stuff that uses AAs, so it's the way I want to go.
I sure wish the AA Zebra had the same type switch as the 123 model. I'm using my NiteCore Tactical PD10 as a handheld light and also use it with an old Maglite elastic headband as a headlamp when I want "small." Otherwise, I really like my Black Diamond Icon headlamp (but it's big).
LED technology is still making good advances and the newest AA lights are on par or better than my old SureFire 123 lights for brightness and run time. Things just keep getting better!
Stay sharp,
desmobob