[jopa489]

I use a soft wax (Dodo Juice Purple Haze), but only because I keep up with it regularly and have a good layer of FMJ below for protection. There is such a fine line between soft and hard waxes - soft will give you a little more shine but less durability, and hard will give you a little more durability but less shine.

I think you would be hard pressed to tell the difference between hard and soft, looking at two cars side-by-side. The prep work is still more important, and the sealant is what is doing most of the protecting.