I bought a Canon Pixma MX922 and all was easy. Just plug and play all iPhones and iPads print with one click. Don't even need a desktop to use AirPrint. Its great. You can select a b&w setting in the Printer Set Up window on Mac desktop of course but AirPrint on devices doesn't have any other options other than Print and copy quantity. The Canon Pixma MX922 doesn't have its own b&w settings either. Any advice?