I have an Under Armor base layer 4.0 shirt that I've used for many years and I think it's the best money I've ever invested in that kind of thing. But I need something new and the new UA 4.0 base layer undershirt is getting poor reviews. Uuiu has some wool undershirts but only good for 32* to 40*. Anybody have any suggestions for anything similar to Under Armor or just a good base layer?