I'm using a Pablo Tablet 6x8, actually. You can find information about it
here.
While it's one of the lower-grade tablets out there, it looks like I fail miserably because I have a tendency to run over the lines I am keeping. Plus the fact that this tablet runs on electromagnetism, so it'll detect my drawing for a mere quarter inch off the tablet. I have to resort making a final sketch by hand to make it look good, which isn't too bad considering I don't have to draw traditional as much now.
Oh, and I on and off use the tablet, which possibly amounts to my inexperience.