I've been in construction for 20 years and have seen compressors of various kinds come and go. These oil less cheap pancake compressors have taken over for the most part. We used to use oiled electric ones made by Emglo that weighed every bit of 70-80 pounds. They had to be set level on the ground and the start capacitors were always going out with jobsite temp power.
These pancakes are everywhere now and are VERY easy to rebuild when they stop making pressure. The piston is just a flat disk and the piston ring is just a piece of leather sandwiched between the disks.
I've bought these compressors used for as little as $20 and they go with me when I travel. It can air up a tire in a couple minuets no problem.