The main problem with standard capacitative styli is that they generally have to use that fat tip that you always see. I've tried the kind that supposedly have a fine point, but those still use a wider disk at the tip that glides on the screen. I also tried the Wacom Bamboo stylus designed for Android devices, which does have a fine tip, but it's still not a great experience -- kind of laggy. What do you plan to use the stylus for -- basic touchscreen interface or artwork?