I'm looking into buying another VMC and a Bridgeport has come up with a Heidenhain control. The machine is a 2002 model and in the literature sent it is said to have a 407 control on it, but on the dealers website it is listed as a 426. Most of my work is programmed offline using cad/cam. Are these older controls ok at processing the large files typically generated by cam and is the 407 any good. I have no real experience with Heidenhain yet.