So in my research it appears I am comparing apples to oranges. The kuiu is a mid layer and sitka an outer (jackets referenced). For my particular needs/wants, I'm going with Sitka. The quixdown of kuiu is crazy impressive and I may regret that part of it but overall I need warmth and I don't want the hassle of taking off my jacket, adding the mid layer, putting jacket back on, then when it's time to go again doing it all over reversed. I simply want to add an outer layer and be done.
No matter what I don't think I or anyone could go wrong on these options. Both top notch great quality.
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