Here is the combo I finally found. For years I wore tons of layers and a thick coat, this year I used the following: Carhartt Work Dri Extreme Cold bottums and top and zip turtle neck...this is awesome stuff...way better and cheaper than Under Armour. Then I would wear my Cabelas Outfitter Camo Windshear sweater topped with a Artic Shield H4 blaze orange jacket. I have never been so warm. But, in my opinion, good long underwear/base layer is big time worth it! Don't get the green stuff unless you are hunting in "green" woods....if you are hunting winter with snow and leafless trees etc...get the gray tones. Also, windshear is great stuff and that H4 jacekt is AMAZING...I wore that just over the turtle neck a couple days when it was around 25 degrees and I was nice and warm...great product.