If you work with dual monitors or have a real large one with the new wide display you might like the 6 X 11, I have the Intous 3, 6 X 11 and love it and the default map fits both monitors perfectly allowing me to use one as the canvas and the other for pallets ( Painter, PSP, & PS) with no distortion to the proportion ratio.

But , my earlier version were the small one and they were just great, so I get the one I could afford and had room on my desk for, on the Wacom site there is a quiz to help you select the one that would work best for your situation.
Edie