Optimum polish has always worked for me. Finish it off with Poorboy's Natty's blue and oh my...
That's a good combo. I use a PC 7424, Menzerna polish, Pinnacle fine swirl remover, and some good ol' Natty's Blue wax, which smells delicious. My car's paint was real bad, so I had to use a yellow cutting pad, Menzerna polish, speed 6, and alot of high pressure/slow movement to get most of my scratches gone.