1x123 XP-G for me... I've owned half a dozen Haikus, and maybe 20 McGizmos in my time here, and this light is the sole remaining Ti McGizmo I own. Others are certainly beautiful, and a case can be made for the purity and asthetics of the PD, but this light just plain works so well. Fits the hand and the pocket perfectly, is dim enough on low and more than bright enough on high. The XP-G beam is absolute perfection in a true EDC... Policescannerman, I believe, coined the term "Punchy Flood" to describe it. Took me one night of use to decide to sell my XP-E. Enough reach, but very useful spill as well. It's been my almost constant carry light since I got it, and I don't see anything replacing it for the forseeable future. I've tried many other lights, from many other sources, and keep coming back... PS- I kept my 2xAA Ti pack, too. Awesome versatility...