I’ve used House of Kolor, Tropical Glitz, and Paint Huffer—this has the most shine.
1/2 lb (227g) Aqua Blue Jewels Holographic Metal Flake .008" Fine Holo Additive
1/2 lb (227g) Bright White .025" Metal Flake, Large Premium Auto Paint Additive
1/2 lb (227g) Rich Purple .025" Metal Flake Large Cut Premium Paint Additive
1/2 lb (227g) Metallic Metal Flake, Rich Gold .025" Large Pro Paint Additive
1/2 lb (227g) Gold Jewels Holographic Metal Flake .008" Fine Rianbow Additive
1/2 lb (227g) Fine Electric Blue .008" Metal Flake Premium Auto Paint Additive