What We Like: Simple and completely unadorned design; weighs just 0.6 ounces. Available in black or white. Replaceable ink cartridge. Cheap.
What We Don’t: Pen cap doesn’t fit on both ends, which means it will likely be lost quickly. Nib not as easily recognized by our iPad. Ink clumped a bit when writing. Stylus felt short compared with the competition. Nib not replaceable. Small ink cartridge.
Verdict: We love the price of the X-Doria Stylus Duo, but the poor pen cap design is a deal-breaker.