I couldn't agree more. I've been using Zaino for the past 8 years. Z-2 leaves no residue at all and after a few polishes you will be amazed at the shine. They have detailed directions on their website how to use their products. I'd start with a claybar and then wax/polish.
There are many other fine waxes and polishes out there as well. Enjoy your car and keep it shiny!
Pat