I don't have a PC13, but I do have a Brad Lewis custom 13 that is one sweet little 3"er...
Nice as it is... I do prefer this slightly beefier version: the 3" 581. For me this is the ultimate gunfighter's revolver. I asked Mark Hartshorn to make this for me from what was originally a tired looking, square butt, neglected 4" 581. The transformation to a round-butt 3"er is stunningly nice.