I haven't used the new wool Patagonia stuff but I've worn their capilene for years and swear by it. Their base layer shirts are seriously some of the best articles of clothing that I've ever owned.

I have a smartwool shirt long sleve crew and really like it as well. My biggest complaints are how many holes I've gotten in mine after a few years of use. I'm sure this is just from washing it using the normal cycle or moths or something - who knows - point is that you'll have to take special care of it if holes bother you.

I'd avoid the ice breaker stuff. I've had it in the past and my biggest complaint was that it quickly gets discolored in the arm pits. I don't know if its my deodorant or what but it looks nasty. That hasn't happened with my patagonia or smartwool stuff after several years of use.