The Gosmart stylus Is the best I have ever used.
I have had a wacom bamboo, and an adonit Jot Mini
The gosmart sends them back to the store return
I got the 300 for drawing, and its sweet for that, but its smaller than I thought it would be its about the size of a standard pen.
I am going to order a 200 next.
they both have magnets tapped in to stick to a smart cover.
the tip is not perfect, but I am beginning to think that unless apple comes up with something or licenses wacoms real penabled technology, this one is about as close as it gets.
Its much much quieter than the Jot. Plus It doesn't scratch the screen protector like the Jot did. (granted I only paid a buck for the screen protector)
but you can really see what your doing much better than even the Jot. the spring is really flexible so you can tilt it all around in most angles, I have not tried anything extreme. I have noticed some apps are better than others for precision. penultimate is awesome with it. Wacom has a really good note/sketching app that free to boot. Plus its solid aluminum except the tip and cap.
http://justgosmart.com/stylus/