YouTube HD Ultimate, The Best YouTube Userscript?

I did not pay much attention to Youtube or any other Flash based video portal on the Internet ever since I have uninstalled the Flash Player on my PC. Still, I sometimes have to visit the site if something newsworthy is happening. A new YouTube userscript that has not been reviewed yet is probably not the most newsworthy item on the planet, but since it was recommended to me I decided to take a closer look. Lets take a moment to think about the features that a userscript should offer. Most users will probably mention that it should support a resolution selector, options to disable autoplay, download links, any maybe hide some stuff on YouTube. YouTube HD Utimate offers most of those features, in an easy to configure interface. The userscript is only compatible with the Firefox web browser, and requires the Greasemonkey extension to be installed as an add-on, before it can be installed.