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

we used to use an aerodur brand primer on our fleet of SAAB 340B's years ago, it was a bit of a pain as SAAB aircraft required a specific fluid resistant wash primer against the metal, then a second coat of a different epoxy primer, then back to a 3rd coat of the original fluid resistant wash primer at which time then you could apply color top coats. flash time was 1 hour between coats minimum required.

we fly Embraer 145 LR's now, and our coatings are sourced from Akzo Nobel. our epoxy primer is a 1 to 1 mix and once its thoroughly dry its hard to remove even with the strippers.