Really, the only time to purge is immediately after kegging in order to dilute the air in the headspace or maybe to drop pressure in an overcarb condition.
Second Amendment Amber
Ponchy Pale Ale - Falconer's Flight
NippleRub Ultra (Light Lager w/Mexican Lager yeast)
In the Chamber:
Empty - IT'S TOO HOT TO BREW
I SAID, IT'S TOO HOT TO BREW