My wife has a 2010. It is loaded out with the Sony Navigation, Moon Roof and leather. She had a Lariat before, all I can tell is that the FX4 is not as pimped out in the chrome department on the exterior.
wow, lots of misinformation on this thread. the FX4 used to be just a suspension upgrade like the Z71. for 2009+ FX4s have an electronic locking rear differential. this is a huge upgrade. plus, they look way better without all of the chrome.