The 3rd generation iReader X-Pen is one of the best stylus on the market. It has a nice heft and comes in Blue and White. It has 4096 degrees pressure sensitivity. This is an all new design and has hexangular pattern, which makes it easier to hold. This stylus has new eraser, it does not press down, like most styli, instead it is sort of like a capacitive eraser, has to be seen to be believed.
This stylus is compatible with most digital note taking devices on the market such as the Fujitsu Quaderno A4 and A5.