I'm not one for getting Gung Ho about "the best" anything. I like popular products intended for hunters, that are easily replaced, and cheap enough to buy 2 or 3 of to keep the wear down and have standby pairs of trousers at hand.
The last time I bought cargo pants they were
Redheads from Bass Pro, bought off the rack. I have a pair on now.
I also especially like the
Alagash Hiking Pants from LL Bean; and they are also my pattern for shorts. Mine are rip-stop and are older than our latest Grandaughter (in second grade).
i don't like the way the USGI military BDU's are sized or their method of making them fit. I can do kinda fine without all that adjusting. I'm 6 1/2ft tall and 170lb; and they don't work that well for me. Besides, at 70, looking military is just not me anymore. I need cargo pockets for my practical things like hearing aids, inhalers, lens towlets, etc. They also hold the occasional mag of 9mm or 5.56 without making me look like Tactical Greg from Shake-a-Leg Falls, somewhere due West and North of me. And buttons suck when you're old, I'd rather scare the poop out of the Javalinas out back doing some rip-rips with the Velcro..
If I was rel-deal tactical, that would be different; tactical, for me, is an occupation, and not a lifestyle or style of apparel... They didn't have cargo pockets back when I was a Mud Marine back in Quang Tri Province
Greg