Research is key here. First, you need to figure out not only how much you're willing to spend, but what kind of computer you want. Find a few, and compare them with both the Base-game requirements and Pets requirements. Regardless of whether you're going to buy Pets or not, EA changed the game engine and requirements when the Pets EP and patch were released, so make sure whichever computer you choose can definitely run Pets. Another way to test a computer is to go here:http://www.systemrequirementslab.com/cyri/ It will scan your computer and tell you whether or not you can run a game. If you plan on buying or have bought the Pets EP, be warned that it will cause some lag, even on new computers. Happy Simming!