What paints to use for an outside mural?

I am planing on doing an 8' x 19' mural on an outside wall. What are the best paints to use for this type of project. I did a couple before (over a year ago) using regular outside latex and they seems to be holding up well. I used a UV protecter over the latex. The murals are in Florida.

I don't want to spend a fortune on the paint, but still want a good quality paint.

 

Thank you for your help. Ed Mann