Wacom's Intuos Pen Pro 3D adds some tweaks to the design and capabilities of the original that should increase its usability for folks who need additiional controls at their stylus-gripping fingertips. Designed to work with products incorporating the company's latest generation of 8,096-level-sensitivity EMR technology -- this year's Intuos Pro, Cintiq Pro and MobileStudio Pro -- the stylus includes an extra button and eliminates the eraser button at the top.

It's also marginally thinner and feels a little lighter, and the button grouping is a bit closer to the nib then before. All of these changes add up to a slightly different balance and operational feel than the...