currently using a set of Muck Arctic sports. I have very wide feet that sweat. I do find them a bit narrow, and the talk of being good to crazy low temps is laughable for me. 3hrs sitting at -10C and my feet are cold. Not insufferably, but damned cold. I also have to put my pants outside the boots, or they are tight. Maybe if i wasn't wearing long johns regular pants might go inside. BTW I bought 1 size over my normal size.