Best cheap Spray Paint Guns for DIY CNC builder or small workshop

[cropwell]

Here is my perspective on the whole issue :-
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The first question is -
Do these spray guns produce acceptable results for the job in hand?
If I had to paint a Rolls Royce, I would take the car to a professional painter of Rolls Royce cars with a known reputation for quality work. I would not consider an amateur job with a cheap spray gun. For painting a CNC frame I would probably use a disposable foam brush anyway.
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The second question -
How valuable is your time that you would spend cleaning out a spray gun?
Generally, when I do a job, I carry on until I am finished (not only the job, but me as well) and am too knackered to do anything but a functional clean of my tools and equipment. So the value of my time increases massively when I am tired.
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Thirdly -
How much does the solvent cost?
Not only in £s but also in environmental terms.
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The final issue for me is who do I trust? A member of this forum who, for some years, has been giving the sound advice of his experience OR someone whose first post on the forum descends to a rant in a short time.