Please don't refer to people as a class from a video game, it's more than odd. I do use GG and nightstalker for different reasons. I can get destroyed while GG is active because there's no over shield and 7 seconds or less to shoot someone. HoS was OP in many ways, though it may have gotten nerfd too much? I don't know, but most Titans I encounter in PvP still wreck. I've used all classes and like them all. If I had time to level up a Titan, that may be my main.