I am about to put one of those 2 in my favorite tiny light. I intend to run it in the 3A neighborhood. I’m using a 5000K Nichia 219 at the moment that has nice tint, just a little warm from white. The idea behind the de-domed 1A of course is to achieve throw in a small light. But the domed 3C would net more output and possibly better tint.
What says Ye?
2 hours to decision time, it’s 3:21PM Central here as of now.
Heres a dedomed 3C XPG-2 in the middle. The green is not as bad as it looks here. Whitewalling shows it out in its worst state. Edit. 3C XML on the left.
I definitely don’t want to de-dome the 3C! lol
De-domed 1A or domed 3C? Which is closer to white?
I also have become quite fond of the dedomed XP-G2 3C.
A domed 3C is probably more "neutral" but still warmer than a dedomed 1A, I don't find the dedomed XP-G2s to give quite as much "bad" color shift as the XM-L2 1As do sometimes.
The de-domed XP-G2 1A's are real nice - nice neutral, not so yellow/green as the XM-L2's get. I've done a few 1A's de-domed.
- de-domed XP-G2's seem to have a higher Vf, hard to get high amps single cell
- domed XP-G2's are nice in a little light though - lots of lumens, some throw
A de-domed XP-E2 R4 1C is the ultimate for low amps (2.8A or under) throw, I would think. Did my first one last night using a hobby heat gun because I was in a hurry -- it worked out well.
1A
3C domed
or in the future 3D de-domed (if you can find one). Also in the future consider de-domed 4C xml-2 from fasttech, two weeks solid use and cannot fault the tint and good CRI. + its bright as heck.
Reflector has too small an opening and it’s not something I want to mess with on this light.
I got it together with the XP-G2 R5 1A de-domed installed. Figure if it doesn’t prove out it’s easy enough to swap emitters.
Now, mind you, this is a 3” light I wear around my neck, ok? Here it is next to Comfy/RMM’s shortened Convoy S6…
How about 3.03A and 452 Out the Front lumens at 30 seconds? 
It’s not as white as I’d like it, especially at Lo around 7 lumens. I’ll play with it tonight and see. Even with the copper, it will definitely heat up some now!
Wow when you said tiny you certainly meant tiny! Im gonna change my mind that needs to be de-domed, 1A. I reckon the increase in throw will make it seem brighter even tho a few lumens will be lost.