If you're just looking for a standard sweetener without special requirements, then either type will work fine. Try one option if you want something with a little more flavor or texture (or as your recipe specifies). It's essential to keep in mind that not all recipes specify which type of sugar they call for, so it might be worth trying both out if you're unsure. Or mix them, like brown sugar and turbinado. Or make your powdered sugar by adding plain table sugar to vanilla or almond extract.