I swapped out the XHP50.3 on my SP36 Pro for the 95 CRI 6500K (listed as 5500K) Yinding round die LED. These LEDs are more on the cool side, but color reproduction is incredible, with almost Nichia levels of greatness. Tint starts on the negative side of the curve and goes up as the current increases, peaking out right at BBL on my specimens, which is the opposite of what usually happens.
If these LEDs became available in lower CCTs with the same light quality I’m seeing from these specimens, they would be out of stock quicker than the 3000K SFT40. It doesn’t really makes sense for a manufacturer to make a cool LED this nicely, but they (not sure who) did it anyways, so there’s hope that sooner than later they will be available in 5000K or 4000K at 95 CRI.