FL is all I have and use. I don't think you can beat their base layers. Best in the business IMO. I really like all their stuff, so I'm a bit bias. Their shooters cut is awesome. I'll have four top layers on and all my clothes are still nice and tight to my body, and not restricting. The outer layers make some noise, but nothing that makes me cringe. The merino pants are super quite, but not very durable. The Corrugate pants are noisy. I still haven't decided if I like them or not. The noise is just a little much. The rain gear is great. Super light and pack able. Recently I purchased their puffy jacket and pants, and have really enjoyed them. Both of them are, again, light and pack able. I have not tried any of the sanctuary line, but have heard great stuff about warmth and noise.