Diablo III: Reaper of Souls

So i have a chance to get this game at a discounted price, but not sure whether the game is for me or not, as I've never played any of the diablo games.

I was told it's similar to torchlight 2 (which i recently picked up in the last steam sale.)

I guess what I'm asking is to convince me to buy this game.

A pomegranate ton of replay value, constant updates to the main game. Hours and hours of gameplay, enough loot to satisfy the greediest of loot whores.