Specialized BG sport. Nothing else compares. I have two pairs.
For winter I have a pair of LG long finger gloves for moderate temps.
For extreme temps I have a set of convertible water proof fleece gloves I purchased at gander mountain.
They are so warm that at 10F I tend to ride with them in half finger mode to let my hands cool down for a few minutes.
I love cycling specific gloves for the gel but in winter I just want to be warm. Outdoor specific stores have a great selection for winter outdoor folks.