somenewguy:
I am thinking of buying a badger renegade velocity and need to know whether my paasche airhose will fit to it or if I need to buy a badger air hose.
No, your Paasche hose will not fit a Badger brush - you will need a new air hose or a Paasche to Badger adaptor.
Generally speaking, there are three "main" types of airbrush/hose connections - Badger, Paasche and Iwata all use different connectors and none of them are cross-compatible.