my hands runs fairly warm... for me powerstretch gloves + a shelled mitts covers me well to below freezing. My wife, and several friends have cold running hands. They have typically gone with liner gloves with good dexterity, and highly insulated mittens (either RBH Design vapor barrier type, or high loft insulated) for warmth. Hands are normally in mitts, but they pop out wearing the liners for the short periods when they need a lot of dexterity. A few people I know have found mitts that "pop their top" to expose the finger for delicate work, but none of these have really impressed me.

Andy Kirkpatrick (aka pyschovertical) wrote a nice article from a climbers perspective about the truth about gloves (they all suck).

The other thing you can do if you are sufficiently motivated is to train your body to keep a good supply of blood flowing to your hands, even when it's could such as the murray method for raynauds

--mark