I have an expensive Iwata and a couple harbor freight. At least one harbor freight I bought would not spray but for $15 I threw it in the trash. The other 2 spray surprisingly good and I use them occasionally, especially for primer.

67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......