TwistedPhil
+1y
For electric pumps, I prefer the Zenith- they have been very reliable, and when our customers have had problems they've always taken care of them. They also keep refining their products- the new models have higher output and include a cooling fan on the head, all at no extra charge!
If you don't need large amounts of air, a Thomas or a small Viair will work for you, but the Thomas can't take a beating or it will die, and the Viair, even though it's rugged, is a boat anchor if something goes wrong with it- replacement parts and support are scarce.
If you have the money, and you need the insane air output, Oasis makes some killer pumps- more output than engine driven compressors (10 cfm plus!), and no pulleys to deal with. However, they are pricey, you have to check the oil in them (other electric pumps use teflon piston rings, so they don't need oil), and they usually require charging system upgrades to handle the current draw.
If you have the space for it, and engine driven compressor is a great way to go for the money. Several bolt-on applications are available through AirLift and other manufacturers, and with proper maintenance they last a long time. Plus, York compressors are rebuildable, so your investment isn't going to go down the drain if something bad happens. The downside here is that many newer vehicles don't have room under the hood for one...
Hope that clears things up a bit. Everyone's right- this thread could go on forever, and you'll get 100 different opinions from 100 different people. Good luck with your quest!
-Phil at FBI