I love Benefit Bad Gal Lash. Great volume and thickness. Dries out fairly quickly, though, and it's $18 a tube. DiorShow is great--haven't used that in a while. Hmm. I also like Laura Mercier.
Drugstore-wise, I like CoverGirl Lash Blast and Rimmel Sexy Curves. I will say, though, that I'm annoyed that every company makes those dumb plastic applicators. I like bristles, dangit. I feel like I'm going to scratch my cornea every time I have to use the plastic ones. Plus, the point is sometimes not pointy enough to reach the corner lashes, especially with Lash Blast.