I had the same light and I put in a K2 TFFC UWOE and it's great. Warm tint with no green or purple. The K2s were probably the toughest over built LEDs out there. It was recommended by darkzero the builder and I am very happy because I wanted a bulletproof light.Following this thread. I have a very old HDS EDC Ultimate 60 in need of upgrade. The last led I put in it was a Soeul P4. It still works great.