Glad you like it, but a lot of flashlight choice is a matter of taste.

I have the same combo with Z57 "clicky" tailswitch, and to be honest, in that size I much prefer the Nuwai Quantum-III, and that's what I EDC. It certainly has less throw, but I find the broader, much more even beam to be more generally useful for my lifestyle. With the KL1 beam, I end up spending a lot of time panning the small, hot spot around to scan a room. The Nuwai is a little shorter, a little lighter, and a LOT less expensive (I bought two for $80 shipped- call it a third the price or less), which means I don't worry that much about damage or loss. I'll probably sell the E1e/KL1 at some point. With two Q-III's, I can't really justify keeping it.

But if you're out in the wide open spaces a lot, and throw is much more important that useability inside, it's hard to beat.

P.S. CR123 cells can be had for as little as a buck apiece online. For the amount of light delivered, that's less than drug store batteries.