I always count all the carb sin yogurt, and rarely have more then 1/2 cup.

Goats Milk Yogurt only has about 8g carb per cup.
StoneyField Farm Plain has around 12 net carbs per cup
And MountainHigh Has about 14 net carbs per cup

The mountainHigh can be found at Albertson's and the Safeway here carries both mountain high and the StoneyField Farms. The goat's milk yogurt I cna only find at health food stores such as the Vitamin Cottage and Wild Oats.