Auto Paint or Vinyl? That is the question!

Hey there,
Here is a picture of my trailer.
We are sick to death of buffing out the aluminum skin on my teardrop.
So, we were thinking about applying this design to it.
(White is shinny aluminum)
The only thing is we don't know what method (painting/vinyl decaling)would be most effective and yet easy on us price-wise.
What do you guys suggest we do?
Here is a picture of my trailer.

We are sick to death of buffing out the aluminum skin on my teardrop.
So, we were thinking about applying this design to it.
(White is shinny aluminum)

The only thing is we don't know what method (painting/vinyl decaling)would be most effective and yet easy on us price-wise.
What do you guys suggest we do?