Optimum Opti-Seal holds up well and has decent depth for a sealant. HD Poxy has really good depth and excellent slickness. Just kind of depends on the effort you are going to put into your truck, like others have mentioned. If you are looking for a wax to apply once a year and then run your truck through the local swirl-fest tunnel wash, you should have got a silver truck. However, if you are willing to properly hand wash your truck regularly, use quality microfiber towels, wax regularly,etc, then I wouldn't worry to much about durability as I would looks. Try a few waxes and sealants, figure out which one looks best to you then use it as often as needed.