i have a couple 510s and some 511s that came from an army surplus type joint. they were marked imperfect (thought i cant see why. theyre fine) so they were 20 bones a pair. i wear them on the bike to work, in the kitchen all night at work, on the bike ride home, on the walk to the bar, at the bar, on the walk home, and in front of my pc while lurking ssfg. i love em, and have worn no jeans but them for like 5 years.