OH Masterminds of the Airgun world....My air supply source has dried up, or perhaps I should say it has aired out...So I'm in the market for a hand pump or compressor and need 4500PSI for 250 BAR fills...I can't afford a compressor right now may be a year or so. So I'm hoping for access to your brilliance regarding hands pumps. What say you regarding bang for the buck when considering pump performance, longevity and easy maintenance?