Torchlight 2 - I've played 30 hours
PROS
+ Cheap
+ Great gameplay
+ Lots of fun
+ Well made classes
+ Great loot
+ Runs on weak systems, very good optimization
+ Lots of mods
+ Pets
+ Infinite NewGame+ modes for unlimited replayability
+ Mini-boss after mini-boss after mini-boss
CONS
- Graphics are poor
- Only 3 Classes
- Pets are not optional
- Respect system is restricted to the last 4 skills
Diablo 3 - I've played 100+ hours
PROS
+ Good graphics
+ Amazing storyline
+ Well made classes
+ Variety of classes
+ Good gameplay
+ High budget and it shows
+ High profit margins ensure expansion packs in the future
+ Can make considerable amounts of real money from stupid people if you invest a lot of time
CONS
- Very expensive when it should be cheap or even f2p due to the Auction House
- Poor optimization, requires way more grunt then it should
- Terrible loot system + ridiculous difficulty spike in hell mode almost force the game into a pay 2 win model
- Almost Pay-2-Win thanks to the auction house
- Is not a Diablo game at it's core, fans will be disappointed
- Poor co-op, only 4 players compared to Diablo 2's 18 player parties (8 players + mercenaries)
- Mercenaries cannot be taken online
- Always-on DRM despite being a single player game at it's core
- Bosses and mini-bosses aren't very common
- Stunted replayability due to there being no real endgame
Path of Exile - Only played a few hours
PROS
+ Free 2 play
+ Best f2p business model I've seen to date
+ Amazing class system, gives you infinite flexibility
+ Class system allows you to make anything you want, be it a Warrior who can summon the undead or an Archer who can create magical shields of fire
+ Best graphics of the 3
+ Seamless MMO despite being an action RPG which plays like it's rivals
+ Amazing ingame currency system like I've never seen before
CONS
- Animation quality isn't too great
- The pace of the game is a little slower than D3/T2
Verdict: Best to worse
1. Path of Exile
2. Torchlight 2
3. Diablo 3
Not to say D3 isn't a good game, because it is. However there are too many things wrong with it and is bad value for money.