You are between a hard place and a rock, the PC doesnt get many good RPGs to be honest, i love them, but they are really moving to platform games.

But to the topic at hand, i would have to say out the list you have given titan quest is probably the best, but off the list there are some great ones, any of the final fantasy's are good [yes im a die hard ^^], Stalker is great love it to death, Fable was good and lastly Divine Divinity.