General question is, which kind of clone is the strongest. For what we have seen are:
-wood clone (Hashirama, Madara, Yamato)
-shadow clone (Naruto, Hiruzen, Kakashi, Itachi)
-lighting clone (Kakashi)
-water clone (Zabuza and some chuunin exam fodders)
IMO water clone is the weakest as it has...