Ooooo interesting page of drawings. I should try doing that. :3 Anyway, I suggest Intuos 3. I heard the Intuos 4 is rougher and wears out the nib more, so I opted to buy the older version. My old tablet always got scratches on the surface, but the Intuos 3 is just... completely scratch-free. It's kind of surreal actually. XD Not to mention, the sensitivity is great. :3 The only problem I have with it is that the driver stops working 50% of the time when you start the computer. All you have to do is clear User Preferences in the Wacom options and you're good to go. :D

Now you make me want to watch Gojira. XD