I'm not asking for myself, I was just curious on what people actually use since there is so many. But to answer your question, I personally prefer FairyChat as it has per group channels, mini message and mini placeholder support and built in mentions
I've had experience with this. It's a nightmare to setup and the support is eh. Cause the owner owns MineAcademy as well as multiple players the support just lacks. He use to do refunds on it though which was nice of him.
I've had it in the past. It's kinda overwhelming if you're not that experienced doing configs. Like Torrent said though, it's in-depth, but the wiki is good.