im a total Oakleys girl. i use the jawbones with the +red polarized lenses. i absolutely love them. i used to use flak jackets, but i was terrified to change lenses cus i didnt want to break a $140 pair of sunglasses! other than my fear of changing lenses, the flak jackets worked fantastic. the ear stems worked better with a helmet than the radar's ear stems do. the radars stems seemed alittle to big with my helmet straps. i agree with ny biker 100%, you dont even notice there is something between you and what youre looking at. the unobtainium works amazing to, no slipping at all, even in 100+ degree texas summers.
if the price is a deciding point, look on ebay, you can sometimes find a good slightly used pair that is wayyyy under the list price. thats how i got my jawbones