I’ve asked this question elsewhere and was recommended a LH351D, but am not sure if I want to use one of them. The 2700K I have is ok, but maybe too warm. The 5000K is greenish. Other options are a SST-20@4000K, Nichia 219C (5000K I think, took them from a S43) and 219B sw45k D200 and D220 I got from Chris.
I’d like to use the 219B but I’m not sure what the LED will do at a current that drives the original LED at 1000 lm. Last option would be obtaining a NW XP-L. CRI doesn’t matter much.
Background: I modyfied the S1R and am really happy with it. But it left some little marks. Nothing visible if you don’t know where to look, but I will open the S1RII only if there’s a really good candidate for an emitter swap.
It works as is, I just know it would be better with a tir made for the smaller die 3535 led. I haven’t really looked for one yet.
I dont use it that much but the tint improvement made a huge difference if I was to carry it on a regular basis. Then I would probably be more motivated to hunt the right tir down and install it.