Shawn,
Both Rotary and PC. I'm a big proponant of the least agressive methods possible first so I try to do the majority of my work via PC...however the rotary is always at my side in the event that there's a need for it.
I feel for you guys with Corvette's though. The clear that GM uses on the corvettes is about as hard as concrete (literally the hardest I've ever worked on) and will even laugh at a rotary many times.
Feel free to PM or call me (614-747-0002) if you have any specific questions that I can help with.
Andy