Sorel is pretty much top of line for quality and choice
http://www.sorel.com/winter-snow-boots/?prefn1=genderGroup&prefv1=Men
They also have the safety work boot with steel tops and sole, but not warmer.
Baffin is an other big company that make great product. If you are in a wet envirronment, some will go with that huntsman type witch is a hight rubber boots with a thick felt liner. Not my favorite, my calf just do not fir in those type of boots, buts some of my friends only use those for winter activities.
http://www.baffin.com/v/vspfiles/catalogue/Baffin_2015_Outdoor_EN_WebsiteVersion.pdf
But they have many more option.
I also use a insulated hunting boot from time to time. When new, I could stand up in snow for hours in 0degree w/o feeling any sort of colf in my feet, and they were good in wet snow and mud as well and were not clumsee at all. Leather and gore tex. Irish setter was the brand I think.
Some thing similar to this, my model is not there anymore. But nice all around, and not bad for driving. Could spend a full day winter driving in the woods or just work around the cabin in a very cold winter day, like 0 or less.
http://www.irishsetterboots.com/USD/product/hunting-boots/00840-havoc-10-800g-gtx-infty
You could also find a miliraty surplus for the mukluks (the military type)
http://www.armynavydeals.ca/asp/products_details.asp?SKU=Can MukWt
One thing to check out, some boots now have a low temperature rating, but many of them are for active use, like snow shoes and trail hikking. Problem, the rating they give is for active bodies. If you try to go ice fishing of whatch a parade, your feet will get cold. Thay are great for day to day use, but not for long time exposure. You can see them with the sorel line up. Some are smaller, but the bigger ones are for the real use in cold weather.
And other option, are the neos overboots. You can get an insulated type, with intergated snow geathers and simply where shoes or works boots inside.
https://www.overshoe.com/Pages/default.aspx
I carry a set in my car all the time in case I get in snow storm or get to a place where the snow was not removed. I also have a pair that fits my paramedic work book for snow storm around here, but they are not completely as efficient as a cold weather sorel or my military / royal mounted police mukluk, but they are a very nice day to day alternative.