I've been playing Runes of Magic. So far I have to say, that eventhough it "steals" many aspects from other games, in many ways the questing, ability to make "custom" weapons and armor, having two talent trees ( for instance you can be a Rogue/Scout using talents from both and you can switch to Scout/Rogue) make much more "sense" than other games like WoW.
The crafting is complex, in a good way, and is "fun".
Oh, did I mention................it's FREE.