Used CH fighterstick for 2 years, before buying a Cougar. As I'm sure you know it's heavier than the CH setup, which some people have found hurts their accuracy. I didn't find adjusting to the new 'feel' that hard, however.
If you can live with the fact that at some point it's likely you'll have to open the Cougar up and clean the pots, it is superior. Mine worked fine for 5 months of moderate use, then the throttle pot started playing up really bad. Many on Cougarworld have had similar trouble, so the quality of the internals is definately not all it should be. Cleaning the pots however is not that hard to do.
I'd regard going back to CH from a working Cougar as stepping back to an inferior product in all respects but one: the CH pots are definately more reliable.
Vladd