I think you will like any on your list.. I bought a Curtis 5 hp with the E-50 (3 cylinder disk vave) new about 1999 and finally
sold it to my friend for his shop..Cabinet blasting, Plasma table, air tools etc. Never one issue, and still like new.
I ended up with a used 3 phase 7.5 horse that I run on my rotary converter.. I still have some real nice single phase
englow,and smaller emglow 3 hp 3 phase on a VFD for single phase use.. The 7.5 HP is a Champion , low hour
R-30D pump These pumps are the disk valve units, and are on the 10 to 15 hp Compressors. I talked to a guy at Pacific-air
in Portland ,and he planted a Bug in Champion's ear, about mounting that pump with their 7.5 hp motor.They did, and
it turns 570 RPM, and is nice and quiet for what it is.. There are models with the lower tier pump, and those are still
decent. Friend has one tht he got for free from his work..They were pushing it way to hard, and they needed a rotary vane setup
Funny, He just bought New Curtis, 7.5 HP, and it sits in it' plastic wrap unused..
If you stick with quality it will be the last compressor you will need in a smaller shop.. Parts are availiable for almost
all of them..Although I sure Like the Curtis Masterline stuff with the D96 pump..