Last year I switched to Merino wool for my base layer, and it has been quite good. It breathes quite well, and does not absorb moisture the same as cotton. There's a reason towels are made out of cotton, and that's because it absorbs and holds onto a lot of moisture. Great for dishcloths, not so much for your underwear.
For cold weather use, I found that I felt cooler by default, but didn't quite get as cold as I was while wearing the cotton Stanfields. It's a little deceptive, because I kind of thought "This is crap, I feel cold even just sitting in the house." but that changed the first time I went outside.
That said, I was wearing the Icebreaker brand, and I got about 70 days of use out of the pants and two pairs of socks before I was wearing them thin enough to get holes. At about $100 for the pants, and $20 for the socks, I'll leave it up to you to determine if the cost to performance balances out. That was 70 days of walking 3-10 kilometers per day, which will put the hurting on the crotch of anything.
If you're going to be active, you have to dress accordingly, and that might mean you're floating somewhere around "cold" and "freezing" if you spend any significant amount of time sitting around. For me, I spent quite a bit of time with my wool jacket unbuttoned to get some airflow going so I wouldn't sweat too much. Aim for a little bit on the side of chilly at idle, and you can usually compensate while active without too much trouble.
Now if you will be spending more time at idle, such as if you're the sorry bugger directing traffic in the winter, or sitting in a treestand, you'll probably want to aim for the warmer side of things as you might not have opportunity to do jumping jacks or something to build up heat. You can always strap your jacket to your pack and carry it out with you.