As Bent stated the 05936 is the stuff to use initially but don't forget to follow up with one of the Perfect-It glazes when you're done compounding. The glaze you use will depend on the color of your paint, no kidding. If you're tired of color sanding here's another time saver. 3M makes a system called Hookit that allows you to use ultra fine sanding discs on your da sander. They even make a Trizact Hookit that is 3000 grit, that's right 3000! Amazingly enough the 3000 does actually cut although you can't feel the grit. ANyway, the point is that with this system you will be able to color sand to a finer grit faster than you're able to hand sand to 1500. The finer grit you use the faster the buffing will be.

Joe