i am old school but new wool designs I have and use

MEC no name
smartwool
Ulfrotte (wool power) now

Of the three i prefer MEC base layers they make them long and in the similar weight as smartwool. the long shirt allow me to bend over or squat without the shirt riding up or pulling out of my pants.

ulfrotte wool is warmer for the same weight but is MUCH more loopy read less wind resistant but i find it to be the warmest of the 3 and has a tail section not quite as long as teh MEC but longer then smartwool

smart wool is a good shirt but design and features of the MEC and ulfrotte make it a 3rd choice.

Thanks
trevor