I got these last week and so far I love them!  They are true to size, I got a 7.5 (what I normally wear) and they fit perfectly.  You may want to order up a 1/2 size if you plan on wearing really bulky socks underneath, but I am using them for everyday use......going to school, getting groceries, shopping, etc etc.

They are much more comfortable than I thought they would be, I was expecting the soles to be somewhat stiff, but I can wear these for hours and they don't hurt my feet or legs.  They keep me warm and dry and I don't have to worry about my scrubs getting dirty when going to work now :)

I also find there is ample room and don't have a problem with them not being wide enough in the calf area when I tuck in my jeans.  Overall, I think they are great boots!