I have a pair of Firstgear Heated Rider Gloves (
http://www.firstgear-usa.com/fgweb3.nsf/Products/465991BBFBD0C4F88625733F0070AF5F?opendocument ) and they ROCK!!!
I have a circulatory issues that basically eliminate me from riding without heated grips or gloves when the temp drops below 60. Fingers turn to little ice tentacles and I can't feel a thing.
I bought those gloves from a shop on a pit stop during a ride down to PA in the pouring rain. Temp was right around 60, but with the rain it was just miserable. Well these gloves, WITHOUT the heating element installed, kept my hands dry and warm. Now that I have the heat troller hooked up to them, I have ridden when the temp has been down to 35 in the morning. They are just great gloves.
As best I can tell, they use the same connectors as the Gerbing stuff. I was planning on buying a heated jacket and connecting these directly to the jacket.
One note, they are only heated on the top side. I guess they figure the bottom is to be heated by a heated grip system.
Regardless of which brand you choose, heated clothing is the way to go!