I bought these boots as I didn't really have any warm winter boots - and here in Wisconsin, you need them! I researched winter boots thoroughly, and thought these seemed the best quality for the price. After reading through many reviews, I decided to go ahead and buy my normal shoe size (8). They fit perfectly! I do wear regular socks in them, but I feel like there's enough room to wear thicker socks if I wanted to (I really don't think there's a need; they keep my feet very warm while I'm out stomping around in the snow).

My feet have thus far been kept completely dry. They come up about 8 inches above my ankle, and I can tie them snugly to my leg. The boots have great ankle support. I haven't slipped once on the ice/snow, as they have a great non-skid sole. I would say they are probably a medium-weight boot, heavy enough to know I'm wearing boots but definitely not too bulky. I've been able to drive my manual transmission car in them with absolutely no problem.

I bought them in the "Dark Tundra" color because they were cheaper by roughly $30. The boots photograph as brown (I sent my fiance a text picture and sure enough, they came up brown as can be), but they're actually an olive green. I knew that before I bought them, and it's a very nice color. Worth saving $30.

Overall, I would absolutely buy them again and would highly recommend them.

EDIT 11/2013: Nearly 2 years later, I'm still pretty happy with these boots. The one downfall I found is that they don't keep your feet particularly warm if you're outside for long periods of time... like at the Packers games. My toes went numb in about an hour of standing outside in 20 degrees. I was wearing 2 pairs of Smartwool socks and these boots, and my toes were not happy. Given that I don't stand outside like that in such cold very often, they're still suitable for my purposes. My toes warmed up also once I was walking around for a bit. So, for your general outdoors activities they're okay, but for an activity where you're relatively still for long periods of time (like sports games, hunting, etc.),  you'll need something else to keep your feet warm.