Welcome to the forums gandhi2,
The Plextor PX-716A supports one additional test in PlexTools' Q-Check options. This feature is called TA Test which is used to check the readability of written DVDR discs. If your recorded discs have problems being played in standalone DVD players you can use the TA Test to check if the readbility of the disc is good or not. Other than that, the PX-716A supports the same options as the PX-712A. Of course, when it comes to supported write speeds, the PX-716A supports faster speeds and DL media.