I have had my Testor's mini for about a year and a half; must say I've been pleased with its performance, significantly so when I added a combo moisture trap/regulator. I live in a townhome developement so quiet was a key part of the decision to buy this compressor. It does have enough umph, although I usually airbrush at 10-15 psi, whether I am using enamels or acrylics. Can't say much about thinning, as I generally thin different brands, and even different colors within a brand differently...for example I may thin ModelMaster acryl black more than MM Acryl yellow...I am sure it depends on a whole set of chemical and color theories of which I know nothing, I just know "what works". Have fun and enjoy!