Next time I see the 513 in person, I'll definitely try it out. For me the 511 is too skinny and low-rise, the 514 is too low rise, and the 501 is too baggy. The description of the 513 has potential. Sounds kind of like the Gap Authentic fit, which has unfortunately been phased out. But the 513 isn't even on the Levi's site, so I wonder if it's an UO exclusive.