The Parking Brake, to set or not set is based on the situation at hand.
Did you just land and brake hard and or did you have your feet on the brakes while taxing in? Those brakes are hot! Don't set the P. Brake, chock it!
I've got King Air time and I land and taxi with my heels on the floor, prevents flat spotting the tires on landing.
Set the parking brake as part of the pre-flight insp.
Many FBO ramps require that you not set the brakes. Once you get called back a couple of times to relase the the brakes will cure a pilot of that habit.
And yes if you land at places where no service/cholks are around then carry a nice set with your N number on them.
