Cry Precision makes BDU/Combat pants out of 50/50 NYCO. These are a bit spendy as well, I got the cheapest pair they sell, the AC Field Pants. They make their own fabric, and sell their Multicam patter to other BDU manufactures. Their NYCO is thinner than other brands of BDU, which is a good thing IMO, and has a nice ripstop pattern.
I find their sizing to be cut very loose, baggy on my skinny ass in the legs, but the waist and length are accurate, for the most part. They came a bit larger than expected, but shrank up to a more accurate fit. I wear a 34 34 in Levi's, so I was forced to go with Crye's 34 long, I think the long covers up to 35.5", so they are a bit long on me, until I add boots and tie them off. Otherwise, they are excellent pants, very comfortable, USA made, and so far pretty durable. I'll wear them to my next airsoft event, and then I'll know.
I just got the Arborwear Tech pants in the mail today. I've only tried them on, but the waist fits perfectly, while the length is a bit long, but not too bad. Again, I ordered the 34-34, and don't expect these to shrink at all. The tags say the material is preshrunk and broken in so they fit off the rack. These seem like they would fit an athelete or a skinny person just fine, there's lots of room to move in these, or maybe climb a tree!

One reviewer said they feel like wearing pajamas, and I agree. These are very soft to the touch, not abrasive or stiff at all. They are almost too comfortable, I don't know if I feel fully dressed, enough to go out in public. I'm usually in jeans, and these are way softer and the fabric just flows, hangs well, but ummm don't get a boner in public! The pockets are nice, just the right size. The double knee is also done well, you wouldn't know they were double unless you really look. I like them so far!