
advantages:
1. more even application
2. use less product (especially if your wax is liquid) because the PC can make a little go a long, long way.
The PC uses OPM (random Orbits Per Minute) instead of RPM.
Many like to wax by hand since most agree that waxing (or LSPing) is the best part of detailing. Wax removal is easy to do by hand as well but this would depend on the wax (or LSP) and how thick you layed it on.
Wax removal by PC can use up a lot of MF bonnets, I reckon. If it were me, I'd use the PC for final buffing, then go over the car again by hand with a plush MF just for the feel of it.
