I was tempted to get one of these digital pens http://www.amazon.co.uk/Wacom-Inkling-Digital-Sketch-Pen/dp/B006DLPYPQ http://www.amazon.co.uk/Wacom-Inkling-Dig

I was tempted to get one of these digital pens http://www.amazon.co.uk/Wacom-Inkling-Digital-Sketch-Pen/dp/B006DLPYPQ http://www.amazon.co.uk/Wacom-Inkling-Digital-Sketch-Pen/dp/... But I've read slightly mixed reviews about them? Anyone used one?