You have to be good with weapons if you want to be a stormcaller. The grenades are worse than both classes, and the melees do less damage and take longer to perform than the other classes, but the super is amazing. You have to be good with weapons so you can get your super up quickly in the crucible. If you can do that, then you'll wreck in the crucible. This class is good for most playlists. Sunsinger is great if you want to use grenades and melees a lot. They're both pretty good. All of the grenades are good, and the melees are great, especially in your super, since they literally one-shot. Also, radiance is the only that could possibly last forever in the crucible if you use weapons like bad juju or zhalo. Voidwalker is more of a fun-based class than anything else. Grenades, explosions, and more explosions. The RAM can turn you into a tank, and Nova bomb is pretty satisfying to use.

Sunsinger for 3's stormcaller for 6's voidwalker for mayhem.

Sunsinger is good if you're one for revenge >:)

All of them are good. Voidwalker is the worst.

All of them.