I first used a pump, or pumps, when you count all the AirForce pumps that died over a 3 month period and were sent back.
Then I took the pump refund money and went with one scuba tank, got tired of driving back and forth to the Dive shop 20 miles one way and bought a 2nd tank and cascaded.
Then the Shoebox came to my rescue, after reading from folks who's advice I respected, I purchased the Shoebox and a 44 CUft scba tank with two years left, off of Ebay for $98.00. In a week after payday and the airgun funds are replentished, I will order a hose assembly from Joe. Right now I am filling a little Airhog Pygmee tank, I get two fills with the Condor.
I love that Shoebox.