I managed to whittle my way down to the top three;
China Glaze is a dark purple colour with a subtle fuchsia shimmer running through it.
The top two include a holographic and a micro glitter.
Crown of Thistles is a stunning orchid holographic colour. One I wore a lot during 2015, and something which really comes to life when in direct sunlight.
However the winner of this battle is Kiko 255, a dark purple packed full of micro multi glitter. Almost galaxy like and gorgeous enough to wear as is.