Salon Perfect Wicked Swatch
I layered one coat of "Wicked" over Essie "The More the Merrier" which is a very witchy green. The glitter had a great payoff in just one coat, and I think with 2-3 coats you might not need a base. I layered it over "The More the Merrier" because wanted to make sure that the glitter was visible in my swatch.
A full review of this polish can be found on my blog here: http://www.nails-by-erin.com/2014/10/salon-perfect-wicked-swatch-and-review.html