Well thank you for your reply. I prefer 18650, no doubt about it. But if it would also take CR123's, that would be fine too. I had hoped for a 1x18650, but if it requires 2, I could live with it. I was wondering about a T20C2, or T25C2, or MX25L3 by Eagle Tac. Also ArmyTek Barracuda was something I was looking at. But these are just the first round. I was hoping I might get a light or two I was not aware of, but in that price range.
I know Eagle Tac has filters you can add on to some lights. (red in particular, I have no need for the others) I live in an area that has multitudes of bugs in the warm months. They are highly attracted to any light, much less bright light. This is not a deal breaker, but it would be nice. I have red light, or you can switch over to white light, on both of my headlamps. One of them is just a cheap Energizer, the other a Princeton Tec Remix. I like to take them fishing. The bugs still come up to the red light, but not nearly as bad as the white light.