Others say...

"Addresses lots of issues but not quite there yet"
If you don't already own the regular Intuos 3 stylus, get it first. This adds lots of functionality, but it isn't the primary Wacom tool. That said, I've really been having a great time with this. Like anything involving a pen tablet there is a learning curve, but after you get it, its golden. Be warned, that although there is much added functionality with this pen it doesn't get the feel of a real marker (which is kind of what I was looking for with this). With practice and tweaking brush options in photoshop, Illustrator, and especially in Corel Painter you can come really close.

My other complaint is the lack of buttons that come on the regular Intuos 3 stylus. Some people don't like the buttons anyway, so you may not mind. Over all, it is a big step in the right direction, but needs a few more tweaks to get it all the way there. In the mean time I applaud Wacom for this, because they are as of yet the only company to come out with anything like it at all.

"Surprisingly Useful, but not for Everyone "
The entire concept of the Wacom drawing tablets has been to get the process of creating art on the computer as close as possible to traditional methods and tools. Well a mouse is all but useless, but the pressure sensitive tablets like the Wacoms makes the art of drawing on a computer a reality. If you are lucky to have one of the Wacom Cintiq LCD tablet displays you are as close to the real thing as it gets.

The Wacom 6D pen does only one thing different then the standard pens that come with your tablet and that is it senses Rotation. To anyone who has done traditional art using a flat paint brush or a flat piece of charcoal its such a natural thing to rotate the tools in your fingers to vary the thickness of the stroke. If that sort of control is what you miss then this pen is for you. With some software the 6D pen can be set-up to mimic this same quality. I says some software because not all support this feature, in fact I have found that Corel Painter is the only one that does it in a meaningful and useful way, and even then you will need to do some tweaking of settings in Painter to get it to your likeing. Photoshop does support rotation but I can't seem to get it to react in a way that feels natural to me no matter how I set it.

My only gripe I have with the pen is it's a little on the thick side and I don't like the angled nibs and would prefer a straight nib option. The 6D pen does seem to be made more for the LCD tablets due to the fact you can see the angle of the pen in your hand as you draw, but it will work in any of the Intuos3 Wacoms. The felt tip nibs do have the feel of a marker