Oh easy, has to be this one guy called avrona. Super entertaining and informative.
https://www.youtube.com/@avrona
On a serious note, I know it's an obvious option, but it's hard to beat LTT right now. There are a lot, A LOT, of things I find annoying about what they do, from some of the presentation choices being rather cringey, and many of their other content policies are weird, but their output is so high, that there's always something to watch. And their production quality is unmatched. They also aren't so boring to get through like same Gamer's Nexus, or have that almost snobbish presentation that irks me about someone like MKBHD, though I do watch him from time to time. After recently being invited out as a creator by them to LTX and going on a tour with other YouTubers around their offices, you really get a sense of the amount of effort that goes into everything they do. Writing this out just really made me wish that someone will finally come along and dethrone them in a way, improve on what they're doing wrong. I really hope it does happen to help keep competition moving in the space.
https://www.youtube.com/@LinusTechTips
For retro tech reviews, you can't beat LGR though. The style of videos is so informative and relaxing, and is one of the few YouTubers where every single minute feels so valuable you feel almost sad it's over and you have to wait for another hit from whenever the next video will be. As someone really into retro tech, I've been getting lots of purchasing advice from him and the many various older products he reviews and showcases.
https://www.youtube.com/@LGR