I have quite a bit of Sitka myself and I'm a big fan of their policies on "giving back" I haven't done an official count, but I bet they support/sponsor more conservation orgs than any other single brand out there.
I also got the opportunity to meet several of the guys that work there during Sheep Show and they are definitely good people who know and use the gear that they sell.
I've been pounding their gear for years here in Alaska. Their customer service has been exceptional for me. The gear performs. Thats a sweet partnership. Sitka Gear is my tested and proven hunting clothing choice.