Beside Z and DMS I’m subbed to metal571 and Resolve Reviews.
I used to be subbed to clavinetjunkie (now renamed to “oluv’s gadgets”), but after I got a really good BT speaker - that I’m still satisfied with today -, I gradually lost interest in watching more BT speaker reviews. He’s also doing headphones and IEMs these days, but… IDK, I guess I don’t care about any of the models he’s picked to evaluate so far. Plus he’s not really experienced in describing sound in words and covering all important areas, he’s been mostly good at setting up comparative sound demos of 2+ devices. Sure a few times he’s clowned around “proving” that aptX is not worth the hype just because it’s not significantly better than AAC, or that external headphone amps are “not worth it” because he couldn’t tell the difference between some random cheap amp and his iPhone 6, but other than that he knows his stuff, i.e. what sounds good and what doesn’t. And I liked the raw honesty he has in common with Z: if he finds some big-brand device that just performs badly he will say so, and will not hold back on the language - if some Ultimate Ears Boom-boom or Bose or Beats Pill or Sony sounds like crap for how much it costs, he will call it what it is: crap. 