What's the difference between Dell's Active Pen and Premium Active Pen?

[Windows Central]

Windows Central is full of dedicated and experienced tech users that use a variety of systems and devices. When we compare and contrast two digital pens, you can rest assured knowing that we know what we're talking about.
[h=2]Premium Active Pen (PN579X)[/h]Best Overall

$100 at Dell

Full story from the WindowsCentral blog...