after lurking around here and at SF, it seems that most people try to get awesome fades and contrast, and flathead seems to be the winner in the category. but i'm wondering what's the toughest jean to get fades on? i love the dark raw feel and would like to keep it for as long as possible. i hear that iron hearts are pretty tough, any others i should consider? 45rpm, PBJ, 5ep (non-SF variety), etc. are notorious for their anti-fading properties.