There's really no difference, it's just about choosing the pie dough recipe you want to use. I've chosen to use a sour cream pie dough for this strawberry galette dough because it is very easy to work with. You can use all-butter pie dough, you can use a dough that has cornmeal in it, one that has cream cheese in it, etc. If you have a favorite pie crust recipe that you know and love and are a pro at making, use that one!