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I use TIR optics in most my new build lights. They’re more helpful on the XP-L emitter family then the SST-20 family. They tend to be very “ringy” exhibiting a color rainbow in reflector based optics, that color inconsistency fades with decent semi-frosted/faceted optics.

The CCT choices are quite spread out, and may lead to warped perceptions of various CCT’s, like starting at only the 2700K for 15 minutes and then switching the 4000K on, and it will look quite blue. That applies the other way around with staring at the 4000K or a uncalibrated smartphone/computer screen for a while, and the 2700K looks gold-ish. But it’s important to note, that they are all classified by science as “white light”. Our eyes automatically white balance all these sources as white, it just needs a little adaptation time.

That being said, my first Convoy had an ANSI white 7A tint! It was closer to 3400K in person, so more a neutral white. Some might say the 2700K-3300K range is too yellow, but remember that thing about white-balancing adaptations! I have worked with 3000K lights when working on my PC, and it was a very smooth experience. The light rendered all colors accurately with less discomfort from the reduced blue content reflecting back. It was a pleasant experience.