I have a pair of Oakley Jawbones. I was also at Interbike two weeks ago and saw the whole Tifosi lineup. I've never worn Tifosis but I was not impressed with the look of any of their products. The Oakleys fit me well and the interchangeable lens system is easy and quick. The lenses really do resist smudges.

The Jawbones are insanely expensive. But they look cool and they're hot right now with the pros. The markup on these glasses must be spectacular.