they all are pretty good. each has its advantages and disadvantages. Titans are (or are going to be) more durable but less maneuverable. Warlocks heal really quickly and have a really good grenade. Hunters have the longest ranged melee ability and can have the best stability with weapons (more stability = less recoil = better accuracy). not going to get into the supers for each class, but they do have their moments when one will be better than the other.