Best paint for outdoor metal?

[HotRodKush]

I'm repainting an old license plate - what would you guys say is best for painting metal that will see extended outdoor weather - it needs to be durable. I have the option of laquer or enamel. I know I'll need an etching primer and possibly a little filler, but after that what paint is best? Which is the easiest to apply? Least hazardous? Most Durable? Can you recommend a brand?

I'll likely be starting with rattle cans, and eventually progress to a spray gun setup if I decide to do more of the same type of work in the future.

[elitecustombody]

Depending on color, I'd use single stage urethane enamel or good grade of high solids clear coat

[69stang]

You can get industrial enamel from several sources. I know rustoleum has some different industrial lines, better stuff than what you can buy at the home improvement stores.