My grey Zurichs work great, and look really stupid. Yes, I hate them. I put them on right before I fly, and put Raybans back on when I land!
I have to buy a second pair, though. Amber or rose for overcast skies. They grey are really bad for that, and I use the amber Raybans instead.
$50 for each pair of Zurichs, but I do say they are worth it. They really help. They keep the wind out of your eyes, unlike the raybans, and cover a MUCH larger area.
Maybe the Oakleys do the same job and don't look so dumb. I have to check those out.