We have three air compressors here
Kaeser (German excellence). 4 miles of wire and an expensive PLC. 4 hours and a sore back to debug. Quiet, relatively trouble-free, and runs forever.
Quincy. (American excellence) Completely mechanical pressure switch that goes "BOOP" when the pressure gets down below 100, and "FLOOP" when the pressure gets up to 155. Noisy, trouble-free, and runs forever.
Atlas Copco. (Italian) Usually comes on around 90 and usually stops around 140. Although sometimes it only comes on at 80. Or 70. Also sometimes it goes to 155. And tries to go higher but pressure release valves pop open and sprays everything with oil mist. One day, I will set this air compressor on fire. The question is, will it be out in the road, with a flamethrower. Or will it be in the shop, while I'm at lunch.