Wool is great because it doesn't stink. But wait.... it gets soggy. My favorite base top layer is cashmiere. But wait..... wool is delicate. Good old poplypro rocks in any condition but it stinks. But it's easy to dry. And tougher. (Anything Patagonia rocks) So I use both, depends on how hard core the conditions. Or how much I'm keeping up with laundry.