Over the roughly two years I have used this plug-in its been fast, easy to use and powerful.
Want MP3 in high quality? Sure, it can do that. Want 1080p video downloads? Yep, it downloads that too. I'm one of those who has chosen to support the developer and so I have all the options open. Totally worthwhile. Even about 2 years later, all is fully functioning and fast without the requirement to pay more.
Ive tried several other plug-ins, all of which ran into issues trying to download various videos. This one never has given me such issues. Its rare to find it unable to download something and other than the odd bug (witch have long since been fixed), I find it just works, when you want, no fuss and its fast.