Having a Samsung DVD recorder we noted that some discs were unacceptable to this unit from another users feedback, which was most helpful as we nearly ordered the alternative make that was noted as giving problems with Samsung units.
The Sony DVD-RW worked without any problems and we were therfore from our experience Highly Satisfied.
I use these discs for doing back ups on my Sony laptop. When backing up I prefer to use the Sony discs as my computer is Sony. I, also, use them in my DVD recorder where the brand isn`t so important. I find them very good.