The benefits of goose down sleeping bags are better insulation and this brings more warmth. You will be more comfortable at night. Goose feathers is one of the best insulators to offer. Another reason with proper care they can last longer. Down sleeping bags are light and compact and will give you more room when traveling.
Disadvantage of goose down sleeping bags are the price and some people could be allergic to goose down. They are not good moist areas.