So I finally bit the bullet and dropped around $200 for a pair of Oakleys. And I must say that although I'm happy with my purchase, I have to say that they are probably (and probably obviously...

) overrated.
If you want a pair of shades that are cheaper than Oakleys but will last longer than a pair of shades that you can pick up at Walmart (like those Foster Grants, Raybans, etc.), pick up a pair of Wiley-X's.
However, if you want to empty your wallet and get a pair of quality spectacles, go for Oakleys.
I must admit that Oakleys are very overpriced, but maybe I'm wrong. There's just something inherently wrong with dropping a couple hundred dollars on a pair of sunglasses... even with all the design features that are incorporated into the glass that earns the Oakley name.
I've had my sunglasses for probably over half a year, I think. That already trumps the record amount of time that I've had for a cheap Wally World pair before they were dropped, cracked, sat on, or just plain fell apart.
My Oakleys (which I finally decided on snagging a Straight Jacket with polarized black lenses, all black so that I can wear them in uniform if I wanted to) feel rather sturdy and have been dropped a few times, although I've tried my best not to get them near my girlfriend's kids.

I'm not sure if it was a freak thing, but one of the times that they've dropped off of my head, a nose piece came off and I had to give Oakley a call to order some replacements (since I couldn't find the lost piece). Everything looks like it snaps into place, so even if you "broke off" a piece, you can always put it back together. Since then, I've had no problems with pieces breaking or flying off.
The lenses don't scratch very easily... and you can't really see any miniscule scratches unless you put the lenses up to the light. Light transmission for the black lenses is surprisingly not much, but it does reduce a lot of glare from sunlight, so there's a plus. Of course, every pair of eyewear has to fog... but I'm actually satisfied with the fact that when I put on my Oakleys after having left them in the car the night before, they only fog up to a point where I can still see through them with just a light white haze, unlike my Wiley-X XL-1 pair that rendered me blind every time they fogged up. Water drops bead on the lense as advertised, although I haven't tried using a Sharpie marker on them (like they show on their video test). I also have neglected to test the ballistic test... for good reason.
Being Asian, I went for the Asian Fit customization, which supposedly keeps the whole thing from slipping down my nose like I experience with most sunglasses. It actually works, and it even fits my not-so-Asian friend, so I don't really know why you wouldn't want to just default to the Asian Fit design. (Maybe it's a comfort thing for non-Asians... I wouldn't know.)
So, to basically summarize this quasi-review, I have to say that if you have the money to drop on Oakleys, go for it. They're wicked expensive, which would be my main gripe, but hopefully they'll last you the amount that you would pay for replacement sunglasses, if you know what I mean. (I think that if I sat on mine open, it would snap into three modular pieces, of which I can just snap back together.)