If you get a chance give the Stihl grinders a whirl. They are nice machines just left nut pricey for the design. The Foleys can be all over the place in terms of consistent grinding and have a learning curve to compensate for that which other types of grinders do not. Personally I usually recommend people purchase a 511 style grinder and a set of CBN wheels, those wheels all but eliminate the need for moving the vise in and out on the currently available chain pitch’s. I usually do not recommend anybody spending much on any of the grinders, for most people it is just not needed. Spend the money on the CBN wheels, $110.00 each, make a $100.00 knock off grinder an enjoyable tool. For $350.00, a person can have a new setup that sharpens all of the currently available chain pitch’s consistently with a good file ready grind.