For me, these shirts are just okay.
For comparison, I'm 5'11" and the Stoic merino in a L fits me pretty well, it's a bit loose I had to get a L since the sleeves are long enough to make the thumb holes very comfortable.
Pros: Performance is good. The fabric of the shirt, although thin, keeps me warm and dry and non-stenchy. I've worn this as a base skiing a few times and always been comfortable.
Cons: Fit! The sleeves and length on this shirt are really short, and I like to pull my thumbs through the holes when I ski. On this shirt the thumb holes cut into my hands. It's uncomfortable enough that I can't wear them at all. The fabric on this top is also very sheer, enough so that you have to be careful what you wear under it if you're wearing it alone after skiing, although it's still warm.
Bottom Line: If you're not an amazon this shirt will probably work great for you! taller girls, go for Stoic.