I was looking for a drawing tablet for a while, as everyone who designs, whether it is for web or for print, needs one sooner or later. Choosing the right device mainly depends on how much and for what tasks the designer intends to use it.
For about six years ago I bought a Wacom tablet and it was perfect for making smaller illustrations. Later I got a scanner and switch to the process of first drawing by hand, then scanning the sketch, and finally creating the digital illustration. For the few cases that required a drawing tablet, the small Wacom tablet was enough.