Have you looked at Strike Team equipment?
I get them from Cascade Fire, which is fairly local to me.
I have thanks, I have bought stuff from Cascade before as well, they offer both the basic greens and advance pants I referred to in the OP, I have several of both and while they work and are durable, they don't have that perfect combination of features/durability/comfort while dirty I'm looking for.
This could quite well be an exercise in futility, but you can't find a better mousetrap if you don't ask around right? Im just looking for a close approximation of the Propper FR ACU's that will last longer without being stupid $. It may not exist and if it doesn't I'll drive on with the kevlar's or just accept that the Proppers are 1 season pants or bite the bullet and try some Crye/Massif. My boots are over $500 custom built to my feet by a family outfit that is building boots the way White's used to, probably better. It's an investment, and if you can't hike because your feet are trashed, your pretty much worthless. That being said, we don't make enough for every wear item to be an investment.
I appreciate everybody's replies, I don't post a lot on LF because a lot of it is out of my professional lane but I have learned a ton just reading and I had a feeling I could get some worthwhile responses out of this question and I have. Just the ebay search term "FRACU" is valuable, I had tried eBay before and hadn't come up with much, probably because I wasn't using proper acronym.
Thanks all and welcome any more replies.