Who is the strongest super saiya from Dragon Ball Z?

It always turns out to be Goku, though some of the other charachters do get their time to shine, but thats alway short-lived. (Like Krillin, Yamcha, Picollo etc. they fight and die all. the. time!) Goku is always beating the bad guys and upping to different levels of Super Saiyyen before everyone else.....so it's gotta be him, I guess.