I only tried the demo a bit, but I will say that I ended up using something like this, as a contrast to what seams to work for other people:
80% horizontal dead zone
90% vertical dead zone
I don't know the cursor sentitivity nor the turn speed, but I treid to do it with 0, 0 on dead zones and coudn't accomodate quickly. I wanted to match the mouse feeling but didn't work out for me. But again, that was the demo and I didn't try for too long.