As seen in my most recent Winter Wonderland nails, I used Milani - Cyberspace from their 3D Holographic collection. I've been eyeing it for a while now, and a week ago decided to pick it up.
Here's one coat:
It is definitely sparkly and definitely pretty. I found it perhaps not so holographic as my Glitter Gal holo, but it's definitely still there. The sparkle and the colour kinda makes up for it, though.