Get a Wii
JK, unless you really want it. They are practically the same. The only difference in PS3 has Blu-Ray (which does not improve graphic quality to a noticeable extent) and Xbox Live has a fee (but offers more than just multiplayer). If you want a console primarily for gaming, especially FPS, an Xbox 360 is a nice choice. If you are looking for a media center as well as some going here and there, a PS3 would meet your needs.