The FA-003 doesn't have clones--they are all clones. The NVX, the FA-003, the Brainwavz HM5, and a couple of other companies all use the same cups and drivers from one single manufacturer. They are the same headphone, although the NVX has a variation on the headband and comes with a different set of additional pads.
So yeah. If you read about the FA-003 and the Brainwavz HM5, and you like what you hear, the NVX is a great deal at about 40% less than those models. Check out these threads: