I've played the Torchlight II Beta with both the Berserker and Outlander. The characters play differently with the Outlander having a nice Steampunk feel to it.
Even though the Beta only allows you to reach level 21 there's i nice feel to it, Torchlight 1 but better. Nice loot and pet selection and a lot of fun.

There's also some nice loot name surprises such as "One Eyed Willy's other Eye" a Goonies reference in the Ghost Pirate Quest.