Love this one! It's definitely for the patient person, because it is extremely detailed. It seems like I'm changing colors every few seconds. I love the concept of the twist tip on the pen that comes with it, however you cannot press hard at all. The metal part of the tip will retract into the pen so it is almost unusable. I had to figure out a new way to press on those stubborn misplaced drills. Great concept, poor execution.









