Josta. Pepsi's first "energy drink" that they released in the mid 90's, made with guarana AND caffeine.
This was back in the days when Pepsi could "sponser" a middle school by putting a branded soda machine in a common area. It's how I ended up drinking grape Fuitopia every day at lunch, and every day I'd get a bottle of Josta for the walk home.
It wasn't immediately palatable. Reminiscent of Moxie but without the waxy aftertaste. It was like drinking carbonated cough syrup. But just like the other energy drinks that would follow a few years later, I really came to appreciate the taste.
It recently popped up in the background of a scene of the first season of Loki which had me hopeful for a revival, but no such luck.
I've been a paying member for almost a decade. I've been training it that entire time with what I do and don't like. I've also been using their suggested playlists for years and further refining what they recommend. So their algorithm is a huge part of it for me. I am constantly finding songs and artists I wouldn't have been exposed to otherwise.
That said, I've been holding my nose while I renewed the service for the past couple of years. I'm willing to part ways for Tidal if it's a comparable service with better benefits to the artists.