I also have a "bright" red stang, black BMW, etc... Not the best colors to try to keep clean. When you go to Griots check out the PDF file on car care. Its a great help.
If you use the accelerator ZFX with Zaino you can do multiple applications every 20 minutes instead of having to wait hours. The instructions do seem daunting but this is what I did from reading all their instructions for that very first polish. All in 6 hours for that first polishing. The numbers are the Zaino product numbers.
Wash car Z-7 (or use dawn if removing old wax)
clay bar (skip if not needed, but paint now smoother than a baby's bottom)
wash car again Z-7 (skip if no claybar)
gloss polish Z-6
polish for scratches Z-5
gloss polish Z-6
optical polish Z-2
gloss polish Z-6
i used zaino bros stuff. expensive but there stuff is killer. i have dead bugs all over my car from the laser like beams shooting off it from the sun hitting it and killing anything flying near it.
I don't know if any of you have tried Poorboys World Polishes and Detailing products? They have professional results and are reasonably priced. I own a detailing business and I've used Poorboys for a couple of years now.