I have a 6 x 8 Intuos (serial--bought before USB was available) and love it--other than the fact I'm having problems with keeping the (updated) drive enabled in ME G. My understanding of needing a larger size would be primarily if you are going to 'trace' on it under the clear vinyl. The larger you go, the more your arm will have to move to cover the size of the screen--I don't think I would even consider anything larger than 6 x 8. Each corner of your screen will be the corner of your tablet, don't forget--no matter what size the tablet. Diane Diane