Bambu - Duofold (cotton inside, wool outside) or some Woolrichs (poly-fleece-something inside, wool outside) might be just the ticket for you.

In the realm of no-itch, yes; Smartwool, Ibex, and Icebreaker are good stuff. I'd say Ibex is the least itchy. I'm wearing one of their Agate T's right now. Very fine thread, very tiny knit, and very smooth. But I have no wool itch problems. Ibex is a pretty sweet and small company in Vermont. i would bet you could ask them to send you a little patch of one of their finer-gauge fabrics so you could check your sensitivity to it.

www.ibexwear.com