Need help choosing best paint
I've always used Dupont, House of color and Spies Hecker.
You can order those if they don't have a local deal. I've never heard anything great about Sherwin William Automotive paint. Do a little research I'm sure you'll figure out what they have to offer and peoples opinions/experiences with their products.
Silver is HOC orion silver 50/50 fine and course.
Purple is Dupont
Silver car was painted about 15 years ago. Purple car was painted about 25 years ago.