For starters, you can clearly tell that the Sephora is significantly smaller glitter than the other two and that the Milani looks pretty tightly packed with glitter.
This time I did two coats! The Sephora looks much better, but the glitter is very small. Not there's anything wrong with that, but I like to go big and bright! The Nicole and Milani are evenly matched, but I still think the colors in the Milani are brighter.
My conclusion: They're all great in their own way. If you want something cute and subtle, I'd go for Sephora. Nicole and Milani are matched, but it looks like there's much more silver glitter in Nicole which is making the Milani look brighter. In the end, Milani wins me over.