Overall I'd say get an Xbox 360. Many people who have both a PS3 and an Xbox 360 say the Xbox 360 is better. Although PS3's online multiplayer is free, Xbox 360 has more games to offer and offers apps like Netflix, Hulu Plus, xfinity, HBO Go, Youtube, ESPN, Zune, Last.Fm, Vevo and much more. Not to mention, Xbox's Kinect is far more superior than that of PS3 and Wii.
And @HEXiT, those stats were before Microsoft fixed the main problem "Red Rings of Death". There used to be a huge problem with Microsoft where the Xbox's Hard Drive would fry, causing the 3 Red Rings of Death. Since Microsoft came out with the new Slim Xbox 360, this problem no longer exists. Also, the new Slim Xbox has a 250 GB Hard Drive.