I currently use Oakley Flak 2.0 for running. I really like them, but they were expensive.
If you're looking for something relatively cheap, but still polarized, you can try Shady Rays. I just got a few pair of their X Series, and I like them for everyday sunglasses... but not for running. When I tried them for running, the top frame slightly touches my forehead just above the eyebrows. It's not uncomfortable at all, but sweat seems to accumulate a little where the forehead and top frame touch. I haven't tried their other styles.