RE: under armor- worth the money?
I love the stuff, use it for hunting and working. I have tried some of the cheaper versions and I personally don't like them as much. I would get the compression style if you are going to buy some but get one size larger than what you normally wear, it makes the biggest difference. I always use the cold gear leggings and it it gets really cold will put on a pair of fleece wading pants, all this under a pair of Cabelas Microtex Insulated pants. The UA allows me to add a pair of fleece pants without getting to bulky.
The heat gear works great for the early season, not only keeps you cooler but helps with keeping the ticks/chiggers off you too.
Just my opinion though.