Which clones are best under Shaak Ti?

I've seen people leave out 5s,Cody, sarge ,rex personally I have all Zeta's on shaak ti and clones g12+ apart from shaak and I have found dropping sarge to be the best for me . Cody mass assist is a must , so is echo for heals and 5s for his massive protection pool and taunt if need . Other than a big hit and the occasional TM removal sarge doesn't bring much else.