Serial ATA DVD Burner

There is currently only one manufacturer of SATA DVD burners, Plextor. Of course, such models are known to be of quality, however, lack of competitors prevent prices to go down.
However, it might change in the future as Lite-On announced a new model based on SATA format: LH-20A1S. It will be the first burner able to write DVD+/-R at 20x.
Even if the bandwidth of a ATA 133 is theoretically enough to feed a DVD burner at 20x, the SATA format has many advantages: most motherboard are becoming SATA only, small wire and connector so no risk to interfere with air flow in the Mac Pro, etc.
Apple has already planned transition to all SATA for optical drives, as 2 free connectors are available on the motherboard as shown on the photo below:

As soon as the LG burner becomes available we will test it in a MacPro (expected price is around 50€).