I have a fair amount of their stuff, because it was cheap on Campfire in the beginning, and I was broke finishing up college. I like their Element Pants a lot for rifle season, their heavier pant. I also have a set of their light weight early season pants- the Switchbacks maybe??- that I like a lot as well. I've had both for several years and they are still going strong. The early season pants are faded a fair amount from the bottoms up to my knee from walking through brush and do have a hole in the side of the knee from a sharp branch while walking through burned deadfall several years ago but it has not grown at all. I'd buy both again if I could get a size that fits right. That said I did try to by another set of the warm weather pants, after they changed sizing around a couple years ago and my size did not fit well.
The 2 pants I have and the merino tops and bottoms all get an A+ for their value for me. I just bought a Kuiu rain jacket to replace the C4E rain jacket. Their lightweight zip up tops are just OK in my opinion. They'd be better if their zippers didn't suck.
Edit: may have been a little harsh in the rain gear... Their rain gear can get the job done. Like Lost said I could see it being good in a tree stand or sitting still, but I found the jacket doesn't breath well and did leak for me after a couple uses. It is quiet though, noticeably more than the Kuiu Chugach I just got.