This is probably my favorite ARPG of all time and I've been playing this since Crystalis on Nintendo! It's not even really comparable to Diablo III at this point. Grim Dawn is better is pretty much every aspect. Visually, it's stunning and the world is almost completely animated. Weather, day/night cycles, and it's just an all around beautiful game. It is also designed for multiple playthroughs as well and you can sink thousands of hours into this game and still not have done everything! 11/10 would recommend even if you have to pay full price although it seems to go on sale quite a bit.

Another piece of advice: buy the expansions.