This brand rocks my socks. Seriously. They're not perfect but they have a wide range of colors and finishes... and quite a few gems. For relatively cheap! I like cheap.
LA Girl Rock Star Groupie
Some lights, it's purple with blue and lavender shimmer. In other lights, it looks almost black with blurple shimmer. Jelly base and pretty sheer: the above is three coats and needed four. It's incredible in the sunlight: one of those polishes that looks decently interesting indoors but then when you get outside, just POPS! :D The above photo is after one day with Diamont.
(Ooh, I just got a big bottle of Diamont -- it just made sense, mathematically -- and I'm totally excited by the prospect about not worrying about running out of a quick dry TC. It's the simple pleasures in life...)