UPDATE 12/24 This is still the best downloader - HOWEVER - the plug in doesn't anymore with Youtube who keeps changing their data streams. Its like playing wack-a-mole. Currently, I'm using a beta version that is installed as an app. Hopefully in the future it can update this add on. The actual reason for coming back and updating is because the app stopped working on youtube. After reaching out for support, I quickly received a reply asking for info. Once he had that, I was given the info I needed to make one tweak and it all worked perfectly. This is a great app and hopefully the magic will be back in the add-on.

UPDATE 4/24 I'm still using this and it is THE BEST downloader for Youtube. Every time Youtube "breaks" the app, you can expect an update within a few days. Dont look any further. Download, install, and consider making a donation. I have in the past and will again to help support this app.

OLD REVIEW I've been using this for years. It almost always works, and when it doesn't an update is quickly released. Well worth paying for it!