I can tell you everything about the Prana Zions. I've been wearing a pair 6 days a week for six months.
The same pair.
So, there's your durability. Hiking, scrambling, biking, rock climbing, rock gymning, etc. The stretch is wonderful and the fit is perfect, loose but not baggy and comfortable while looking smart.
The DWR was bad at the beginning and is nonexistent now after some 30+ washes. Not a problem; they dry so fast, I've never had a "wet pants" issue even when caught in rain at 30 degrees. I usually pair them with a wool baselayer and haven't been miserable. If you want a pair of pants for rain, IMO you need rain pants, period.
The spandex in the thighs and knees wore out a bit. No noticeable difference in performance, just a few wispy spandex "hairs" in these areas. Maybe one per centimeter. I've ignored them.
No cuff wear. Wow, for what I use them for, wow.
Belt is near-useless. Tends to slip. Cut it off and use the belt loops.
The cargo pocket is small. The main pockets are durable mesh (not ripped yet, despite keeping keys, leatherman, etc). and are DEEP pockets.
Ask if you have questions. On durability alone, hands down the best value ever.