New low pricing makes this a very attractive gun at the new price point.  The Centurion is not the full sized gun, its the next size down.  The 9mm holds 15rds and the .40cal holds 13 rds. (Just like the Glock 19 and Glock 23).  Both come with a nice case, 2 magazines, lock and load assist.  The APX is the gun that Beretta submitted to the military as their attempt to get the last new contract.  The 9mm and .40cal are both the same size.