To me it's mittens for brutal cold days. By not having open space between your fingers they stay warmer. Not a huge fan of mittens but use em when they are needed. Other than that most times it gloves.
My only real preference is under gloves / mitts, I can't stand over gloves / mitts of any type. Makes me mental to pull my gloves or mits over the cuff of my jacket. It's a personal preference, neither one is better than the other really.
As for mitts I prefer and use, Burton AK Oven Mitts, under-style. Mad warm and gore-tex wind blocker and primaloft makes em totally worth the high price. I've also found that leather gets colder faster in temps below 10 degrees.
Last edited by Cyfer; 02-12-2013 at 06:33 AM.