I would recommend Fallout 3 if you are only going to get one game. It's not a typical FPS, because yeah it has a massive RPG element. It has one of the best targeting systems of any game also. It is just really enjoyable.

If you are looking only at Fable 2 and Saints Row 2, then I would probably suggest Fable 2 because you will have more hours of play on it. It really is a great game, a lot better than the first one. My personal opinion though, get Saints Row 2. I love the game. It may not have the depth and really deep story like GTAIV, but I honestly think it has more enjoyability when playing the game. I picked GTAIV up when it was released and played it for a few weeks here and there, then put it down. Saints Row 2 I got and played nonstop and I am still playing it now.

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