#1 - Surfer for the sheer awesomeness of his potential and the speeds at which he can (and sometimes does) operate. Surfer can also take beatings from Celestial level beings, for an extended period of time, which sort of helps.
#2 - Hulk, as "one dimensional" as he is, he is literally unending in his ability to pour on more power, more force, more strength, that makes him virtually un-killable. Frequently collapsing dimensions with mere by-products of his blows are feats that I've not seen any of his 'rivals' do. Still, Surfer is much faster, much better at range and has the tools to nullify much of Hulk's attacks.
#3 - Sentry, made Asgard his *****, made Thor cry and only lost when he got freaked out by his own patheticness.
others.
Superman - when needed got amazingly crazy feats and display of overall power, its not a question of how many powers and abilities you got its how you use them, superman is the peak and Symbol of the high herald class
Silver Surfer - great power output and energy manipulation overall is displaying amazing feats even for a herald
Thor - obvious reasons