Adam P.wrote a review of Patagonia Merino 2 LW Crew - Men's on March 13, 2012
The best baselayer I have ever used so far. Lightweight enough to breathe well when working hard, but still keeps you warm when you stop. Fit is excellent and it is super comfortable. The best feature of all is that it doesn't smell! Wore it for a week and a half straight on a trip, and climbed hard every day. By the end I barely smelt, while if I was in capilene or another synthetic baselayer, I would have been pretty rank.
The price is pretty hard to swallow, but if you can find it on sale like I did, it will pay for itself with the number of times you can use it.