I like their flat lip liner pencils a lot. Soho is probably my favorite nude lip liner ever. That + Instant Gold lustreglass = hot. I get lots of compliments on it.
Their flat eyeliners are nice, too. I believe I have Tokyo, which is like a blackened green. It's either Tokyo or London, I don't remember exactly which one, but it's pretty gorgeous, and the flat tip makes it easy to do a smooth, even line.
They have a special sharpener for these pencils, but I recall only spending like a buck or two on it, so it's worth it.
I get their stuff at a little beauty supply store at my local mall, but I notice they're also starting to stock Styli Style at some CVS locations.