There is a large family of Goop adhesives, "All Purpose", "Automotive", "Craft", "Household", "Lawn and Garden", "Marine", "Plumbing", "RV", "Sport and Outdoor", and "Wood and Furniture" As far as I can tell, all are identical. Some, such as "Marine" and "Automotive" may be more UV resistant. So, at least for indoor use, I suggest buying the cheapest. In the local hardware store, "Household Goop" is usually the cheapest. At the time of this writing, "Plumbing Goop" is the cheapest on Amazon. As far as I can tell, E6000 is the same as the various varieties of Goop, but packaged for industrial use.