I use a 22" wacom tablet, but only for photoshop. I can move around better in illustrator, 3dmax and windows just using my mouse. But the pressure-feel/erase feature is top-notch for photoshop. My tablet can operate either as a 'tablet' direct correllation to position on tablet to position on screen) or 'mouse'(doesn't matter where the pen is).
I'd recommend wacom - their drivers and programmable software have never failed me once in xp(and it's an older tablet).
If you want my model number I can post that this afternoon when I go home for lunch.