So I am planning on getting my first tablet The typical work I do on my computer (aside form surfing) is some graphic design (on photoshop), film editing (final cut pro), webdesign (dreamweaver) and currently learning after effects and illustrator.

I am wondering what size (wacon bamboo) tablet I should get.
The medium one is on sale near my house for $169. However the small one is on sale for $59!

Should I save money and go with the small? or invest a little more and go for the medium?
will the medium be better overall for my purposes?

thanks ahead