I use that one on a 25" dual monitor system(Avid). I think it's an A4, I know it's not one of the A3's.
Here's a pretty cool article for helping to decide on which tablet to get:
http://gearoracle.com/guides/how-to-choose-wacom-pen-tablet/
Johnny Cuevas, Editor
Thinkck.com
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.