I will have to say that the Chinese compressor are improving too. A good indication of the durability is how hot the cylinder head gets. I have this general rule of thumb. Force the compressor to run continuously for 30 minutes. If the cylinder is only warm to the touch, it is very good. If it is hot, but you can keep your hand on it, not too bad. If the cylinder head is too hot to keep your hand on it, it is a bad unit.
You can do a better test with a laser thermometer. Under 110°F, very good. Over 140°F, not acceptable.
Because the Chinese compressor varies widely in quality control, the result is not very predictable. It is best to find a local vender with good return policy. Test the unit at home. If not good, return it.
I recently did a
little write-up on a FongHua Bida (AS186) compressor with tank. It is $40 US dollar plus shipping from
Northern Tools in the US. No a bad deal for infrequent user. The noise is no higher than a typical airbrush compressor from Iwata or Sparmax, but the pitch is slightly higher, just barely. It is not the supersilent type at $600, but you can talk comfortable without raising your voice while airbrushing.
The Northern Tools compressor cylinder head (the part with the vertical heatsink fins) gets as hot as those house brand sold at TCPGlobal, BearAir. If you leave it running continuously for 30 minutes, it is about 45 degrees F above room temperature. It is quite acceptable since the compressor has auto-on-off and would never run continuously. In normal use, the head will barely get warm to the touch.
The auto switch turns on and off at 45 and 60 psi respectively. These are very good to allow good pressure margin for different paints in most airbrushing jobs, except not quite enough airflow and pressure for T-shirt airbrushing. The airflow was very steady with all of my airbrushes. As usual, with compressor at this price point, your milage may vary.