Need for Speed will take you a good 30 hours or so I think if you plan to complete it with all Gold. It's a massive game.
Virtue's Last Reward is cool, it's down to $30ish (£19.99) in Grainger Games now. Not worth it for you though unless you can find something else as shipping would be $15 (per 2 games) and also the UK version of the game features Japanese audio. They do have Smart As for £14.99 too.