The stock stylus that comes with the Modbook certainly does the job. But anyone who's drawn using any of the Wacom Cintiq styluses knows how much more ergonomic and comfortable they are. Unfortunately the aforementioned styluses don't work on the Modbook due to a system incompatibility.
Thankfully the good people of Axiotron have followed through on their promise of offering more precise and better performing tools to support the Modbook.
Today I got my STUDIO PEN in the mail and tonight I got the chance to finally try it out. From the get go it is marvelous tool. If fits perfectly on your hand and feels exactly like the Wacom Cintiq stylus. The kit comes with extra pen nibs ( including those sought after graphite nibs), extra clicker and rubber grip. So one can really feel good about putting the pen through some constant, real world use.
Compared to the stock stylus, the Studio Pen is more sensitive and gives really subtle feedback. The graphite nib responds smoothly to the digitizer and sleek, ergonomic grip feels natural and intuitive. The only drawback is that the pen won't fit the cleverly designed pen garage on the bottom of the Modbook. But this is a small price to pay. The upgrade in quality is worth the price and I tend to carry accessories in my gig bag anyway.
So if you are an owner of a Modbook, it would behoove you to give the Studio Pen a try.