Arc'teryx Elephant Pant
I wear these pants all the time, for hiking in winter and summer, and around town. Light, fast-drying, and surprisingly sturdy. Haven't managed to damage these pants, even when hiking off-trail. The only weak spot is the crotch seam, if the pants are worn too low.
Unfortunately, Arc'teryx appears to have added a full 2" to the waist in this year's batch. This is a problem if you have a slim build and long legs, because the smallest waist size for the 35" inseam is 32" (which now measures more like 35")!