This is a difficult item to review.
The iPad wasn't designed for stylus use, so any stylus is not going to come up to the requirement you want.
However, this one gets about as close as you can currently get to perfect.
There are some provisos though:
It's great for drawing apps, as long as you don't lean on screen.
For note taking, it will require either, an application that includes a 'lean on' area, or a 'zoom to write' area.
The two applications I have used are Memo (which has the lean on area), and NoteTaker HD ( (which has the zoom to write area).
Of the two apps, for writing, I prefer NoteTaker as it is more accurate in registering the input from the stylus.
However, Memo has a great lean on area, which allows you full use of the iPad screen.
It does fail a lot in registering the input from the stylus.
Memo also has a great handwriting OCR , which converts your written text to typed text for email or PDF.
There is a new stylus in the making from Adonit that is going to utilise Bluetooth technology to register the input.
It talks of increased accuracy and being able to lean on screen.
Until that is out, this is your best bet at a THIN stylus that you can handle like a pen.