If you have a Carquest nearby, I'd go with Duragloss stuff. It's quality stuff. They've got 111, a quality liquid wax, and 105 just came on the market this summer, supposed to be their most durable paste wax ever. They have a prep product to help bond the wax that's really supposed to kick up the durability, I think it's 601 or something like that. And I really like the Aquawax spray wax for quick touch-ups. You can use it as a normal spray wax, a wax-as-you-dry, and some guys use it as a QD.