Wacom is pretty much the standard for graphics tablets, I suggest getting the Bamboo

Wacom makes the best tablets, all the others are not so good. The Wacom I have has lasted me a little over 5 years now. Other then having to replace the pentool and the mouse that came with it (Due to years of over usage) it still works vary well... I got to start drawing with it again though, been to lazy to do so

Wacom, etc.

If you're serious about using a tablet every day and getting quality work out of it, your only real option is an Intuos, Graphires and Bamboos are basically just aimed at hobbyists and as such aren't remotely as sensitive.