I pay for Flickr pro, and have no regrets. My use case is a little different than most I think… I use it as another backup mainly, but also use the API access on a WordPress site, and my android tv box has flickfolio running to play slideshows. I also run a Piwigo server at home for family sharing.
Eventually I get tired of watching any of them, but I used to like DigitalRev with Kai and Lam. They were a good balance of informative and fun to watch.
For reviews I watched Chris Nicholls, Matt Granger, Steve Perry. It’s hard to find a channel that isn’t too ‘youtuber’ in style (“smash that like button and don’t forget to subscribe!”), and knows what they’re talking about.