I used to be a big proponent of good ol' Great Lash mascara. You can't beat the price of this quirky green and pink packaged staple. But the mascara irritated my eyes a bit and had a tendency to run "Alice Cooper" style at the first sign of moisture.
The best alternative I have found is Lancome's Flextencils curling mascara. It's a wee bit pricy, but it's never clumpy, gives good results and one order lasts about six months. Plus, if you sign up for Lancome's mailing list, you time your purchase in order to get pretty good gifts when you shop online. Most others, including Clinique, require you to go to the department store and deal with insufferable make-up counters in order to get these gift packages. You can also pick it up at Sephora.