The Cougar has very clunky gimbals
The CH also has some strong force changes thru the x y axis
The MS joysticks are little smoother

The Thrustmaster Warthog uses some sort of single ball axis which should be considerable smoother than gimbal setups.

yeah i seen these at this site:

http://www.valiant-studio.eu/tarmac/html/en/hangar.php

i would love to have this sort of stuff but cost way too much