@ John Cena shyt is dead on.
before nikkas come in here talking about vegeta was a jobber, let me point out these facts. every victory the z fighters had came with a major vegeta assist.
it was vegeta who gave him the pre game pep talk that helped him beat freiza.
when goku was getting his as kicked by that fat faq android it was vegeta who had to come save that nikka life.
when gohan was fighting cell, whining talking about he couldn't do it, it was vegeta who came with the distraction that allowed gohan to finish cell.
when goku needed to gather energy for that spirit bomb it was vegeta who got his ass kicked to distract majin buu.
I'm going with the prince of all saiyans.