There doesn’t seem to be any of the ”bluish tint in the beam” that Hank talked about, the beam looks good.
For comparison with TA XP-HI test :
Anew_old
2.5A 3.08V 3.42V
3.0A 3.13V 3.52V
3.5A 3.17V 3.60V
4.0A 3.20V 3.68V
4.5A 3.25V 3.75V
5.0A 3.28V 3.83V
5.5A 3.36V 3.94V
6.0A 3.42V 4.02V
So a pretty big difference, this should increase efficiency quite substantially with a boost or buck driver. In it direct it will pull much more current, about the same as the 519A since they have similar Vf under 5.5A (after that the new XP-HI rises more)