Sorry to say I've never used either. I've been buying Badlands lately. Great gear and you can usually find it on Amazon much cheaper than buying from their website. From just seeing prices in the store, I won't ever try to afford Sitka gear.
I'm going with kuiu this year if I can afford to drop the coin on it! I've heard good things about their clothing! Sent from my iPhone using Tapatalk
I have a mix. My rain gear is Kuiu. My outer pieces are Sitka or First Lite. My opinion is that First Lite is the best base layer out there. Sent from my iPhone using Tapatalk
Both are great. If fit is a problem then you might like one over the other. Both are athletic fit. I have Sitka mountain pants and will wear for a long time. Comfortable and I needed pants in a tall size. Just got kuiu gators this year and a merino undershirt. Both are great quality. Have some first lite stuff too that I like. I would get a pair of KUIU pants if I were looking for pants. They have a zipper vent on both legs which is a good idea to me while hiking and with big climate changes. The starter of sitka is also the starter of kuiu so you are going to get good ideas from both. Along with quality. Sent from my iPhone using Tapatalk