I have several spray-painting projects this summer. The first is an Arbor that I built a few years ago. It has lattice on three sides, which can only be painted properly with a spray rig. I also have to spray paint some yard chairs and benches. Lastly, I have to stain my deck. The only effective way to stain the deck railing pickets is with a spray gun.
I bought a cheap battery operated spray gun at Amazon about a year ago. It was a piece of junk. I ended up throwing it away. So, I bought this Graco Magnum spray rig to replace it.

It is a much nicer unit, almost professional grade. The Graco is more powerful and versatile regarding the types of projects it can handle.
All I have to do now is read the directions! And then do some testing with it to see how it handles.
Doug