I love my 511 Commuters. I always tear out the crotches in my jeans, but the gusseted crotch of the 511 Commuters has worked out very well for me, on and off bike. I have probably 5 or 6 pair of them currently, and have only worn out one pair. And that was just a broken zipper.

I do wish that Levi made them in a looser style though. I have big muscular cycling legs. Whenever I crouch down, flexing my quads, my legs completely fill the pant legs, taking up all the extra room created by the stretch fabric, with no room for the fabric to slide.

I've heard great things about Keirin Cut Jeans