I used to be a big Oakley fan and still do like some of their glasses. Personally, I'll probably never buy a pair with the plastic frames again. My ti wires have lasted nearly a decade, only problem was the nose pads ripping a few years ago so I just pulled them off and the glasses actually fit me better because they're lower on my nose now.
I've sent half a dozen pairs of M-frames back to Oakley, all broke at the same spot, pretty much right in the middle. The first pair lasted a few years, but they steadily were breaking more and more often and the last pair I got back broke within a week when I picked them up to put them on my face. And no, I don't have a wide face at all. No level of optical quality is worth sending your glasses back so often that they're in transit more than they are with you. Doesn't do any good to have "perfect" glasses if you don't actually have them.
Now I'm using a pair of Smith sliders that I have been very happy with for my shooting, mtn biking, etc. IMO, Oakley knows they have the name and can get the high prices they demand regardless of the durability of some models.