Clarkson - go with the Benjamin. Better dude, better quality and a better product.
I'm also a 40L across the board, and SuitSupply fits me like a bag of dicks, so I have to assume that the fit is similar on you.
@DWFII correct me if I'm wrong, but wouldn't a lot of the shoemaker's access and competence be based off of market preferences? I'd imagine many more cobblers have the blake machine and technical competence/experience in Italy than say, the US.