For the past four years I've used Cannondale's Windfront gloves (recently renamed to "Slice") and have been pleased. I have one pair in large which gets to me right around freezing, then a second pair in extra-large which I wear over a pair of long-fingered summer-weight MTB gloves. That gets me to the single digits.

It was time for new ones this year, and my LBS no longer carries Cannondale. I tried a pair of Endura's Dexter Windproof gloves instead. I've worn them only twice, both mornings around 35°F, and they seem nice and warm enough. The padding is more decorative than functional, which is fine. I too prefer unpadded gloves. The sizing is a little smaller, though. I don't think I'll be able to double-glove with Endura's XL. I have yet to try. Maybe it'll work.