i've bought china copies of whatever but it's best to get guns that you want to grow old with. in the little experience that i have, quality china copies < 2k Php in my area is reasonable enough, but not good enough.
there are gonna be improvements but they say to buy high end and consider not progressing from low, mid to that as money saved, paint saved, time and effort saved. and it's the truth.
hvlp has a standard air usage and pressure and the compressor capabilities should be factored in.
i'm a noob so take this for what it's worth. for base 1.3mm nozzles, sometimes 1.4 is favored.
for clear, 1.4mm, less so the 1.3mm is preferred -- some clear topcoat techsheets allow up to 1.7 for their paint. so really it depends on the techsheet.
for primer usually it's 1.8mm. i haven't tried flakes, not soon, but check the techsheet for it from your preferred paint line, 2.5mm i guess.
i'm planning to get high end copies of iwatas. with a few compatible caps and nozzles. i'm ordering them from the U.S. soler, t alonzo is not accessible to me so.. you might discover good finds with some legwork in that area. happy hunting
depends on the gun. but i guess the low end guns just stamp what specs they want to. of course the painter always has to adjust the output depending on the gun and the paint used.