The Sims 2 is such an awesome game in its own rights...but there's something missing from the game itself.
GRAPHICS: The core graphics were incredible three years ago. In 2007 today, they're not as good like it was three years ago. A slight problem is every Sim walks, moves, and sleeps the same way every time, but it's not a distraction at all to worry about, anyway. There are no slowdowns in the game at all, thankfully. There are colorful, detailed pixelated characters, but in upcoming expansion packs, there will be a graphics update. But for now, they're probably working on it.
SOUND: Now the sound is a different story from the two. The sound is exceptional, but also fails in some spots, where some Sims make or talk the same "Sim Language". But that's not a problem. Also, all of the Sims, male and female, will make the same sound, too. It does get old, and it is a little distraction, but not major at all.
RENT OR BUY: Personally, I'll tell you to rent this game from GAMEFLY or somewhere else. If you bought the Sims or played it, and you are a huge Sims fan, then you should head to the nearest store and find the Sims 2 on a shelf or somewhere. Remember to rent because I don't want you to spend your money and then get bored and then try to return it and can't return it for your money back.