I've worked with CD-R, DVD-R, and (in more recent years) BD-R discs of all brands since the mid-90's, and I know junk when I see it. While Smartbuy is not a premium brand, these discs are consistently reliable and hold up well over time. They won't test as highly as other more expensive brands, but for what they are, they are pretty good. Failure rate is negligible and exceptional for a standard retail disc. I use these for high quality video and audio and they deliver flawlessly nearly every time. They work well in my desktop drives and BluRay player with rarely any issues. Probably not recommended for archival applications, but for general use, you're not likely to find better overall quality at this price point.