I used to be subscribed to every vape related channel. Eventually, I settled in to favorite devices and favorite juices and stopped caring about knowing every detail about every single item on the market. One day, I noticed I was way behind on video watching and I didn't really feel compelled to catch up. So, I unsubscribed from all of them.
Right now, for vape related stuff, I'm subbed to sxmxdrifter (SuperXdrifter here on ECF). He mostly does rebuildable tutorials and things like that. And, I'm subbed to cutlerylover. Cutlerylover does mostly knife and gear reviews, but he sometimes does a juice review or something similar. Mostly I sub to his channel for the blades, but he's entertaining enough for me to support his channel with some view time on his other stuff.