I really like my underarmor field pants. Wax the bottoms.
Very comfortable, good pockets, good belt loops, not snaggy, breathable. Things I thing you should look for.
I just pitched a pair because I wore them through. I had a tons of miles on those.
Glad to switch to my backup set. Probably better options, but I like mine.
When I go into a hunt loaded with briers, I use some old school camo wrangler jeans that have vinyl-ish lower.