I've been wearing several brands of merino wool every day for several years and I can feel each one outperforming the other. For me, Minus33 stands out as a quality leader. Their lightweight shirt weighs 170g while most other brands weigh 150g, and therefore the shirt is noticeably heavier (albeit slightly warmer). The neck and arm openings have that perfect amount of stretch that other brands tend to overlook, and it keeps you comfortable. They are also sewn very well with no visible loose threads or weak points. My only criticism is that the fit is a bit uncomfortable, like the feeling of putting a shirt on backwards, but to a lesser extent. It's much more subjective to the owner, so it's hard to rate. but there is something to consider. In general, I really like Minus33.
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