I was a YouTube premium family account owner. Paid for myself, my partner and three friends accounts (think it was five slots?)
The recent price hike was too much, so I've been using frontends as of late.
The YouTube premium experience is seamless, much faster than the frontends but at the same time your getting shit shoveled down your throat at every chance.
I've had lots of issues with libretube servers as of late. Pipe pipe is better but overall since I dropped my sub I've been watching far less on YouTube as a whole.