I have Smith V-Ti's (Like a Oakley M frame), Smith Reactor max (like an Oakley Half Jacket but discontinued), Oakely Half Jacket XLJ, Oakely M frames (with sweep and hybird lenses), and Oakley Jawbones in the photochromatic lenses.
I can say without a doubt the jawbones are the best of the bunch. I have about 10 pairs of oakleys of varying types. I like Reactor Max next, then the M-frame, then the V-Ti, then the Half Jacket. HalfJackets, even with the XLJ lenses don't have much coverage....
The warranty on the Smiths is WAY better however, so if you are hard on your glasses go with Smith. They are cheaper, have good optics, and will replace or send repair parts no questions asked.
But if you want pure perfornace, I really like the jawbones the best.