A couple of years ago i bought a Cheap Valley 2.5kw twin take off 25ltr receiver compressor , could have done with a larger receiver though for useing air tools etc, but for spraying was ok , the only weak point is the reed valve system as i have had to replace it twice up to now , i had to make them out of some spring steel, so bought a set of spring steel scrapers used for body filler, but very cheap and does the job, plus enough material to make a few more spares for when it goes again.
Mike