I installed a SST-20 4000K from Convoy in my FC11 with a TIR, and I have a IF25A which also uses a TIR, and they are both excellent. Their outputs are very similar to the Nichia 219C 4000K as used in the Jaxman E2L, all of them are pleasant to use, no obvious green cast and I don’t consider them too yellow.
My first SST20 was in a IF25A and it looks great. It’s creamy and just right for forest walk.
I recently bought the E07 with FA4 and it’s not green at any power level.
Most of the usage will be less than 4amp for me so there’s not a significant difference visually between the emitters. 500lumens and 800lumens is about the same unless you directly compare it side by side. In real life it’s not significant.
The green hue is a bit a distracting. depending on what your going for. it’s not great for photography, otherwise it’s perfectly usable for outdoor and general use. Importantly there’s barely any tint shift it and looks great with Zircon 802/803 without needing any diffusor. Kaidomain 2700k is yellowish but with 802 filter ( bit overkill I might add) it comes out rosier than even a dedomed 219b 3000k
I’ve had excellent success with the SST-20 and still use it in many of my lights. Is it as pretty as the 219B? Well of course not but I very rarely encounter the cat p*ss green that people complain about. Certainly nothing like the older Crees and I find it much more pleasing than most LH351D versions (although Simon’s 3500k is pretty good).
Both my IF25a and my D4V2cu are very pleasant. I also have a sampling of emitters from Convoy, KD and AE that have been very good. It remains my overall favorite emitter.
I have a couple Fireflies NOV-Mu which use 21x E21A 4500K in a mule array with a 6A buck driver. It creates a very soft light when bounced off a wall or used with an umbrella. There is no angular tint shift and very slight pink tint shift at full direct drive turbo.
Unfortunately, they are unavailable at the moment. They do have a similar model (PL09MU) which uses nine emitters in a mule array with a FET driver. There are several emitter choices but no E21A 4500K.