I have been using the Amazon Basics 16x DVD disk for about 6 months and thus far they have worked flawlessly. The DVD disks come bundled in a easy to use spindle in packs for 100 disks per spindle and the price is only $19.90. That is less than 20 cents each.
Amazon describes their product as:
Amazon.com Product Description
This spindle of 100 AmazonBasics 16X DVD+R disks provides a convenient storage solution for video files, along with plenty of space for archiving photos, music, and other data. Each disk offers a capacity of 4.7 GB–enough space to store two hours of DVD quality video. These DVD+R disks support fast write speeds from 2.4X to 16X and provide a recording time of up to 120 minutes.
Give these disks a try. You won’t be disappointed.