I have been a fan of LaCrosse boots for years. I have owned 2 pairs in 14 years and won't buy another brand. They are durable, warm and comfortable. i wear them not only for deer but also for bird hunting as well.
As for the post above about rocky boots, my dad and brother both bought pairs of them a few years ago and I saw that exact thing mentioned above happen. The rubber fell apart in checks and overall they wern't terribly comfortable (especially for the price).
As for socks, I boguht a pair from sportmans gear daily last year. They are two layers and apparently do some sort of moisture wicking deal. I wore them last year in Maryland and thought they did well. The season had some moderate temps but I felt like overall when it did get below 40 degrees, my feet stayed warm.