I bought the basic Back Country Jacket and Back Country Pant last year to see if I like it.
I recommend it, but other models might work better:
It's not as quiet as wool or fleece (think "fleece-lined light-weight neoprene"), but it also doesn't absorb water, and is warm (I can drop two layers of clothing). It doesn't stink when wet, and is machine washable and dryable (even air-drying is pretty quick when wrung out). The stuff is burr-proof, stretchy, totally windproof,
...and TOTALLY waterproof... which means the material doesn't breathe well. If it was more breathable (even by adding more vents), then I would like it alot more. If you try it out, definitely get the lightweight (L.A.W.) stuff, and get a model with as much ventilation zippers as possible.
If I were buying again, I would try the L.A.W. Lakota Jacket or Stalker Jacket, and the Stalker Pants.
P.S.
The snap at the waist zipper is weak, and should be beefed up, and I don't know how the material responds to flame yet...