Thanks for the posts. I'm looking to get a heavy base layer for less physically demanding hunts that don't involve a lot of hard work or easy hiking in really cold (15-25 degrees) weather. I've gt some mid weight wool and some Cap 4 on the way. Figured I'd try them both and send the one I don't like back to Cabela's. I've got Cap 2 for the harder hunts. Hopefully, I'll get a chance to try them all and go from there. I may just use the Cap 4 for tree-stand hunting here in GA.