I'm wondering which sealant is more durable, Wolfgang DGPS 3.0 or Klasse SG. I don't have much time to properly detail my car. I only get around to it about two times a year, so I need a long lasting sealant. I have used SG and like the results, but it is a little hard to work with. I have been hearing good things about the Wolfgang DGPS 3.0 and was wondering how the durability compares between the two.