Stirling bar is softer and smaller than PAAInteresting thread. I'm currently using a tobacco shampoo bar by WSP. But I don't think I'll buy again, since getting it to Canada is cost prohibitive. I have used a PAA but found the scent weak and the bar too soft. Didn't last very long. Will try Stirling next. I've been using both their hand soaps and shaving soaps. I find them to be good value and performers.