White may not be a colour I choose to wear a lot, however I still need a couple in my collection.
W7 - White (swatch)
I like this one because it's cheap and is good for nail art, it isn't one I would want to wear as is though as it takes three coats to be opaque.
Barry M - Cotton (swatch)
The opacity of this is a two coater, and isn't streaky either. Flat, wide, rounded cuticle brush shape too which is my favourite type. Definitely my go to white polish.
OPI - Alpine Snow (swatch)
This goes in the same category as the W7 White, good but not the one I prefer over Cotton.