The XP-Pen Artist 22 Pro 21.5" Graphic Drawing Tablet Monitor is the largest sub below $600.00 pen display monitor I could find that met all my other criteria. When it comes to drawing surfaces I believe the bigger the better, hence my choice. I know there are bigger displays but my budget didn't stretch that far. I also know WACOM pen display tablets are generally better quality products but I didn't want to settle for the 13.3" screen of the Cintiq 13HD, the only one of their tablets in my price range. It should be noted that this is my first Pen Display monitor. Prior to this I...