Is the HP tx1000z (tablet PC, touch screen) good for drawing on?

I am looking to buy a new computer, and would like one I can do graphic design on. Is the HP tx1000z good for this, or should I get one with an active stylus. I would prefer the HP because I would like to be able to use other things besides the included stylus, and not have to worry about loosing it, but if one with an active stylus would work better, I will look into getting one of those.

Also, does anyone know of a tablet PC with a 15.4" display. My current laptop is 15.4" and I am afraid if I get a tablet, I will regret loosing the larger display size.

Thanks!