Hello There, after I read some other posts that they are lazy, meaning that the solid line is painted only delayed, I opted for this pin. When I tried it the first time on the iPad, I was surprised at the large diameter of the "Apple" tip. Before I tried it, I got the tip towards negative. However, I can revise my first impression. The tip writes where you'd expect it, and no obvious inertia.
On the other hand one can purely screws each refill, for that I need not elaborate.
Especially important was to me that the pen is not too thin. That's given and I use it not only on the iPad / iPhone but also on paper very much. I do not regret the purchase.
