Paint gun for hobbiest?

I would buy the purple $15 gun from HF and spray color / clear.
I do not like it for primer, you need a larger tip to shoot primer.
One of my oldest and best friend's is a body guy. Owns a small shop now that things are winding down.
I bought this one for Evercoat Slick Sand and Feather Fill. You an turn up pressure and shoot thick stuff like Bad Chad does. But if will.be rough. And materiel gers wasted. He's and idiot who spends money and has to sand it all down to flat then block since it is rougher looking than a French Quarter White. Big tip gives a smooth finish with high build. Ok got off on.a tangent sorry.
https://www.amazon.com/gp/aw/d/B09TMZJPKY?tag=fabo03-20
Having said that, have seen my buddy shoot candy jobs with the Cheap Harbor Freight in a pinch.
I have a cheap Harbor Freight purple gun I bought as an extra.
Picture is my old well taken care of Sharppe Platnum HVLP (20 years old?) Was used a few times by the PPG paint store to shoot samples of candy for display. Was still like new. I bought extra needles and caps and kept it clean.
Keep in mind cheap guns and some good ones don't have stainless steel parts so rust is an issue.
I have used the 1.4 tip size for laqure paints. New style base/clear, and single stage. Sealers, epoxy (PPG-DP) it's an all around size. But any high build needs larger. Yes you can thin it but defect are not filled and defeats what it is intended to be used for.
Parts wear get spares and get Stainless.

BOTTOMBASE1.jpg

BOTTOMCLEAR8.jpg

stripes12.jpg