Contactcr did a few test on several different binned LH351D’s and posted them here.
My favoorite is the SPHWHTL3DA0GF4UPP6 90 cri he tested from Digikey.
Shave it for a tighter beam and lower duv with slightly lower cct.
They are still available at Digikey
If you prefer 4500k I would suggest 90 cri 5000k shaved or dome on for more output.
Couldn’t tell you which bin is best as most of mine came from AEDe group buy with a good tint.
I have seen over 1000 lumens in a 16340 single led light with a little over 3 amps using a 5000k 90cri LH351D with dome.
Pretty sure that one was what we call the dogfarts bin
The dogfarts bin seem to have been a popular bin as I have seen it pop a few times here.
I prefer shaved for the tighter beam and better tint but if your lumen hunting leave the dome on.
