Any data on durability of Icebreaker, Smartwool, and Ibex wool tops? I haven't had any problems with bottoms and accessories, and I take the lower durability of wool socks (versus synthetic) as part of the deal. But I have found big differences in durability of shirts.
My experience, best to worst: Smartwool (five-year-old stuff), Icebreaker, Ibex single-color, Smartwool (recent), Ibex stripes (didn't last two seasons!).
Maybe I'm just expecting too much, but my older Smartwool is going strong, with no pilling or holes despite regular use. My Ibex striped shirts have lots of holes.
Related science question: Anybody know what design/construction factors affect durability of wool?