I have tried a number of different brands of synthetic shirts (I sweat a lot and it is nice to just wear them around instead of cotton). Under Armour are the best ones I have found. I have some cheaper and more expensive brands and nothing compares. BCG (I think), Northface, Adidas, Duofold, 5.11, Sugoi. Some of them wick very well, but UA is by far more comfortable. Cold gear works especially well when it gets a little chilly out.