XM-L2 U3 1A or U4 1C ?

which is brighter to the eye ?
which tint is best? looks like the 1c is cooler with a hint of mint…which should appear brighter then the 1a correct?

U3 2C vs U3 1A, U3 2C final.
So now it is U4 1C vs U3 2C, then is U3 2C.
Of course not considering dedoming.

Just read the u4 bin is not brighter at all but much less bright compared to u3 or even u2 bin, this info correct or incorrect? it will be with solid 3Amp 4.1v

went with 4c tint.

I haven’t tried the XM-L2 U3 or U4. Do you consider a XP-L? That might have been the way to go to avoid higher vf.