If I want to strip my car to the metal..... what do you recommend?

Razor blade scraper, then a d a sander.

X2 couldn't agree more. I am doing my car and that is exactly what I do. The razor blade takes off all the paint and a da with 180 removes all the rest. No chemical to burn your hands, melt plastic and make a mess. No neutralizing acids or other caustic materials just paint flakes and dust.