After using up the Turtle Wax that I had, I decided to give Meguiar's a try. I'm very pleased with their Gold Class paste. So pleased, in fact, that I'll probably just get the same thing again when this tub runs out. It's easier to work with, and seems to give better luster as well.
1995 Mustang GT (5.0), daily driver
1995 GMC C2500 (5.7), alternate daily driver