If you're only going to run 145psi get the 450. It was designed to operate at that pressure and will last a long time for you. If you're not running 200psi the 380 and 480's are a waste of money because they were built to run, and operate at their most effecient at the higher pressures. They are less effecient around 110-145 then the 450 is.
Post was last edited on Sep 01, 2007 12:38. Edited 1
time.