After this morning I have decided I need some new base layers for cold weather. I have never been what I guess you would call high tech when buying hunting clothing. I've always wore the old insulated long john's but I don't reckon I'm as tough as I used to be. I've heard good things about the Under Armor 2.0's I think it was. So what type base layer do you guys recommend I buy? I don't care what it cost, I hate sitting and shivering