Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy!!!

I bought these disks for use with the NEC ND-1100A drive. So far I tried 6 disks: 3 worked fine and 3 failed to read after the burn. That is 50% of failures!!! They also fail to be re-recorded as well. Neither of the 2 PC DVD drives (NEC and SAMSUNG SD-616T) nor the Sony DVP-NS415 player recognize those that failed. I had no problem with the Fujifilm DVD+RW using the same software and hardware. I believe that this issue is caused by the poor quality of the media.