Another version is to me makes the sticks feel sloppy. I have 10% negative on all my planes as thats all I want. You really don't want positive expo. Lets say you dial in 50%neg expo. What's going to happen up in the air is your wanting to make a simple left turn and your moving and moving and moving the stick to the left and nothing is happening until "wham", there it goes.

Very sloppy. You get use to it after a while but its a personal preference. You can put in 10% to start off and probably wont know the difference. Has nothing to do with dual rates as many sometimes confuse the two

If you accidently go positive. all you need to do is just think about moving the stick and the plane will come around, land at your feet , look you straight in the face and tell you "don't you ever &^%$# do that to me again!"