decent ipad stylus ?

Looking for a decent stylus.
Mostly for note taking, diagrams and some drawings/sketches.
Coming from using a windows tablet(fujitsu st5011)
and big fan of onenote for notetaking etc.
iPad 3 Stylus that hopefully works well for pencil style sketches as well as schematics and scribbling notes down.
Also does anyone know of any schematic programs for ipad ?
No port of eagle cad or similar?