Powder coating will last a lot longer. Painting is cheaper. Plast-dip is removable, costs a lot less than paint (only a little more than a few cans of Krylon), and lasts longer than spraypaint. It's not available in a wide range of colors, but it's an option, especially if you want to try something like flat black & decide in a few months you don't like it.

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Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k