U die and lee factory crimp die and I have ZERO problems with glocked brass. Actually I'm not even using the FCD right now.
I size all my 40 brass with a Dillon size die turned down until it presses on the shellplate, and have never seen chambering issues with my M&P or 2011.
My next single stack will be a 40 for all of the reasons that steel1212 mentioned, mainly cost and brass is everywhere.