Best FREE MMORPG game??????

I was just wondering what people recommend as the best FREE online mmorpg. And dont say WOW or Aion, even though those two look amazing, I dont want to pay a monthly subscription. I would prefer to play a fun FREE game, but I guess I would buy one if it was truly worth it. I want a game as close as possible to WOW or Aion, and as most realistic and best graphics possible. I have been looking and people say games like: Guild Wars, Silk Road, Granado Espada, Cabal, Rappelz, Requiem: Bloodymare, Hard to be a god, NeoStream, and Perfect World. I hate Runescape and AdventureQuest. Obviously I cant play all of these and see which ones are better so maybe you could just tell me WHICH MMORPG GAME IS THE BEST??? Thanks for the help