I main a warlock, I've always liked mage classes in games, and (before I knew about sunsingers) my heart was aflutter from the epicness that the Voidwalker gave. Fast forward to today, and I've found that Warlock is literally the most versatile class in the game. You want to raid or solo the nightfall? Sunbro all the way! You want to school some noobs in pvp? You bet your bottom dollar thay you want Voidwalker! (As a note, you want Obsidian Juju for control and fast axion bolt grenade regeneration+bloom for ToO.)