One of my favorite youtubers has a big collection of CEDs, and he made a video about them and their issues: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=O7UH9QfcIi0" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=O7UH9QfcIi0</a>