I was thinking about getting a 6 camera ps3 setup in place? Want to do motion capture for martial art moves. By what I see in example video's that system should capture actions well.. Is this a good choice or is there a better path camera like the 2 azure kinetics... Thanks

If not yet, check this comparison of camera setups in our docs
http://docs.ipisoft.com/Multiple_Depth_Sensors_vs_Web_Cameras_vs_Action_Cameras_Comparison

As you mention martial arts, my first impression is that moves are fast and there is high likeliness of self-occlusions. In that case, you'll benefit from greater frame rate and greater number of POVs provided by PS Eye cameras.