Here is a link to my review of the Sofirn SP31:
Of all the lights I own, it is probably my favorite tint overall so far (I don’t own any Nichias … yet). Perfectly warm without being overly orange and no traces of green. It uses the exact same emitter that the Q8 will. The beam is very balanced and I like the up/down intensity UI a lot - it is the only light I know that does up/down steps. The only possible downside to me is that you can accidentally trigger strobe with a double-click. The timed stepdown from Medium is also unnecessary (but not an issue for me either).
Full disclosure: in the official Sofirn thread, numerous people mentioned a problem with the current batch of SF11s on Amazon. One person also mentioned a problem with their SP32. If you get a defective unit from Amazon, returns/exchanges are easy but if you are buying from another site…