3 seasons ago, I purchased the redhead bone-dry bighorns from bass pro. I haven't been disappointed. They are waterproof, warm, and breathable. I thought they were a heck of a deal at $60 considering I've spent hundreds on other brands (rocky) with the same to lesser results. With that said, when it comes to warmth, it's all in the socks. Make sure to get 100% wool. Wool will not retain moisture like cotton and other materials. Expect to pay about $15 per pair for good ones.
Hope this helps.