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Here are measurements I took of the different Acebeam TK series flashlights using the Texas Ace Lumen Tube calibrated with Maukka lights measured at 2 seconds. I love this series but not so much the emitter options. The Osram is actually my favorite tint in this series even though I'm not a CW fan because the negative DUV in the Osram makes it look pure white. I just wish they offer some below the BBL (negative DUV) NW tint in the future.

Acebeam TK16 Osram Turbo 1,190 lumens included battery
Acebeam TK16 XPG3 Turbo 1,586 lumens 9025K -0.0090 DUV 74.3 CRI 13.2 R9 45.2 R12 65 Rf 99 Rg included battery
Acebeam TK16 Osram Copper Turbo 1,184 lumens 6589K -0.0016 DUV 68.3 CRI -20.4 R9 40.3 R12 62 Rf 97 Rg included battery
Acebeam TK17 Nichia Highest 1,580 lumens 5118K 0.0036 DUV 92.6 CRI 68.1 R9 71.1 R12 89 Rf 93 Rg included battery
Acebeam TK17 Nichia 2nd lowest 67 lumens 5107K 0.0032 DUV 94.1 CRI 79.0 R9 67.8 R12 88 Rf 97 Rg included battery
Acebeam TK18 Copper Osram Eco Mode Turbo 697 lumens 6542K -0.0003 DUV 66.5 CRI -26.4 R9 38.6 R12 60 Rf 97 Rg Vapcell VTC5D
Acebeam TK18 Copper Osram Power Mode Turbo 1,750 lumens 6998K -0.0036 DUV 67.8 CRI -16.1 R9 41.1 R12 60 Rf 98 Rg Vapcell VTC5D
Acebeam TK18 Copper Osram Power Mode Lowest 60 lumens 5973K 0.0048 DUV 67.0 CRI -35.9 R9 35.6 R12 63 Rf 96 Rg Vapcell VTC5D
Acebeam TK18 Copper Osram Power Mode High 691 lumens 6461K -0.0004 DUV 66.8 CRI -25.7 R9 38.7 R12 61 Rf 97 Rg Vapcell VTC5D
Acebeam TK18 LH351D Power Mode Turbo 2,793 lumens 6557K 0.0023 DUV 73.1 CRI -27.9 R9 51.0 R12 70 Rf 96 Rg Vapcell VTC5D
Acebeam TK18 219C Power Mode Turbo 1621 lumens 5391K -0.0010 DUV 95.2 CRI 85.5 R9 72.7 R12 90 Rf 99 Rg Vapcell VTC5D
Acebeam TK18 219C Power Mode High 656 lumens 5337K -0.0005 DUV 95.4 CRI 88.0 R9 70.4 R12 89 Rf 99 Rg Vapcell VTC5D