SunSinger. Bungie listened to the whines, nerfed and removed. DawnBlade is just daft.

None. Warlocks Suck in D2. not one good grenade in void or solar, most of the arc ones as well. Meh ib PVE, Less than Meh in PVP.

I find it quite fun to melt off a person’s face with lightning, while killing all the adds around them at the same time.

Sunsinger with Claws of Ahamkara, Brimstone, and Sunburst. Add that to solar burn, brawler, and airborne in heroic strikes/nightfall. It's great to punch a thrall and watch as him and his friends explode and turn into orbs. Sunsinger is lit.

Easily Radiance. It was the most customizable super out there. If you needed boss damage, use Fusion grenades +Radiant Will + Gift of the Sun + Heart of Praxic Fire, and outdamage Celestial Nighthawk. If you needed team support, use Fusion grenades + Song of Flame + Vikings Funeral + Touch of Flame, and increase team damage by 15%, while also refilling your teammate’s abilities and contributing more DPS than Black Spindle. If you died too much, use Fireborn + Flame Shield + Tlaloc, and enjoy having the most overpowered gun in the game, an overshield on demand, and a get out of jail free card. And on top of all that, Radiance was the most versatile super, no matter what you had equipped. You need long range damage, use your guns. You need powerful AOE attacks, use your grenades. You need to kill that annoying blade dancer trying to slice you up, melee them and watch their butterknife turn to ash before your eyes. A good Sunsinger with Special ammo was the most formidable enemy out there. And any half decent Sunsinger has replenish on all their guns. [spoiler]So, as usual, Bungie decided to remove it from the game. RIP Sunsinger.[/spoiler]

To be honest, my favorite overall was D1's stormcaller. For D2, it's voidwalker. Stormcaller in D2 doesn't feel as strong as it used to but arc soul is handy.