Which Of Your Client Use a Balance Training Device

There is ongoing debate about the purpose of stability training devices. Tell us about your experience with wobble boards, Bosu trainers and stability disks. Did you experience improvements in fitness that were reflected in your/your client’s everyday function? Should these devices be used by everyone?
http://sweatscience.com/bosu-balls-wobble-boards-stability-balls-dyna-di…
http://www.mysimplicitytraining.com/blog/?p=1362