The only installer maker worth using is PackageMaker, which comes with the Apple developer tools.
Use Installer VISE or Stuffit InstallerMaker, and you will make your users angry. Apple's package format is much better because it is a completely open format, so it allows things like my app, Pacifist, to read them and customize them. Other installers like Installer VISE are proprietary, so if they have a problem (which occurs often since they are buggy), users cannot work around them at all, causing much frustration.