I'll preface this with the fact that I haven't actually tried it yet..........
But I'm addicted to the Pearberry from EliteVaporWorks. They also have a cotton candy, and if it's even close to on par in flavor as their Pearberry, it's gotta be awesome.
They have free shipping, so you can order a 6ml bottle of it for $3.95 shipped, if you want to try it.
Elite Vaporworks Cotton Candy - Liquid
I'm just waiting for them to get the Vivi Nova minis back in stock, before I order and tack on a 6ml bottle of it to try.