Panama Jacks from WalMart...$12. I got two pair , one pretty dark for the bright sunny days and one lightly tinted for cloudy days. I do have a pair of goggles I bought but just don't wear them much.
These glasses are a wrap around style so if you don't like regular sunglasses due to the "tears", try one with this style. They work great.
Whatever el cheap, 3 for 15 buck, designer knock-offs I find at the flea market/swap meet that turn me on. I buy several pairs, put 'em in each vehicle and wear them till I loose 'em, break 'em, or find another style I like....I never did get the whole throw gotta-throw a half-a paycheck at a pair of sunglasses thing.
I have a pair of HD transition glasses. The only thing I don't like is they fog up when you're stopped if the temps are cool, but they clear up really fast when you start moving again.