Quick thought to keep in mind:
Air tools need shop air (a perfectly constant 90psi) to perform as advertised. the regulators on most home compressors cannot keep up to this. My Matco/IR 1000lb max reverse can't do much better then 300-ish pounds on my home compressor. Plenty to pull axle nuts and crank pulley bolts, but at the shop it can do much more much faster.
Electric tools will always perform as advertised, since home electric power is no different then what you get in the shop.