What are your thoughts on a good pen?Can anyone give me some points on pens?

Hello everyone, I work for a pen company that manufactures different kinds of pens from one time disposable pens to refillable pens/ball pens/gel pens etc. I have been given an assignment to create a presentation on pens in general which includes a slogan, particular significance of pens in general and also we are making a folder where there will be write ups on different aspects of our pens. FYI we use German and Swiss technology and our R&D- USA and we have 15 different categories of pens. Some examples that I can give you are : Smooth writing, writing length of 2 km plus. International standard etc. I need more....please Help!! The best answer will receive 10 points. Thanks in advance for your effort.