Okay; I have to say, it's easy to see the allure of the high-CRI Nichia emitter output. So I built up my first Nichia light last night, and saw my first High-CRI Nichia illumination ever. The light is the Convoy S2 I built up using the KD 219b triple and optic combo I linked above. I'll try to put together another thread with the details of the build shortly.
I was very pleased with the output on this light. Although mildly driven at only 2.8A, I got a very floody light with a great tint. I'm comparing against my previous best CRI light, an old warm-white XR-E emitter in a P60 drop-in. I don't know the CRI of that old emitter, but it was fairly good at rendering color, so I've used it when grilling as it gave me a better representation of the food. Both the XR-E, and other warm/warmish XM-L emitters I've used though always had a very yellow tint (I had some of these Pee-Water yellow emitters: https://budgetlightforum.com/t/-/30106). I didn't mind the warmness of the XR-E much, but never did like the pee-yellow tint of the XM-L2.
These Nichia emitters have a great tint, that I would call a true "Neutral" which has no yellow, blue, green, or other oddball hues like I've seen in Cree emitters. It's just what I would call a "White" light. Colors are much more vivid when viewed using this light, but they are naturally so, and completely across the spectrum. None of the colors "jump out" more than others; they are all just rich and fully saturated.
I compared this light against one of my other favorites, a similarly floody light using a Cool-White XM-L U2 emitter. Although the CW tint usually doesn't bother me, this light makes the difference quite drastic. When alternating between the Nichia and the Cree, the Cree tint becomes an obnoxious blue that you don't really notice when your eyes are accustomed to it.
I am not a tint snob, and have always been partial to the brightness of a cool-white emitter. I'm curious what these emitters will mean for my other flashlights as I start using them more often. I have three spare emitters now as I ordered a second triple to cannibalize the emitters for other projects. I was already planning on building up a 2x AA light from an eBay host using one of these for my father who works in networking and needs the CRI for identifying color codes on cabling. I'll also build up a P60 host for this myself, and probably a single-AA sized EDC pocket light.
Coming soon: A "For Sale" thread titled "All of my poor CRI Cree lights" (Not likely at ALL). ;)