I got my 6' x 9" Wacom bundled with Fractal Paint 2, a long, long, long time ago! That was a Win 3.1 application, BTW. It has seen about 4 differnt computers connected to it over the years but it is still chugging along. I put the mouse pad over it when I'm not using it, so it doesn't actually take up any space. But I think a 4 x 5" would be O.K. too, and they are a lot cheaper. It has no application other than with a paint program, just use a mouse and mine dosen't work all that well with Photoshop - it is superb with Painter 8, though.