i just put streng lvl 10 on him and strengh lvl 9 on isshin xd it is not my only Partner lol^^ or i would use only him and my main ^^ even if i fight someone who is faster than me my Yamamoto the last standing and i win ^^ when its my turn like i said if u look for one cheap Partner and strong Yamamoto is the best choice now it's up to u u can spend 50k or 60k gold for mugetsu or any just to get him ^^ with 50k 60k gold Yamamoto is not a beast he is god ^^