An absolutely brilliant add-on that takes away the gripes I've had with vanilla youtube and other extensions. Developer is superb in response and clearly passionate about his craft - when Firefox quantum forced add-on devs to rewrite, most abandoned their projects, shifted to Chrome only, or just took forever to get to it. Maxime pretty much banged out the changes and had E4YT ready in time for Quantum - that's deserving of the label "Superb!".