I have been using The Clark Flush . I got the 'most people' from a poster here who is a Naturopath.
I know everyone is different and everyone's health issues are different. So everyone will react differently to each cleanse.
I have done the Colonix--which is a parasite cleanse, bowel cleanse, and kidney cleanse all in one. I have not gotten a zapper yet, but would like to get one from http://www.bestzapper.com