First of all, the best on the chat is the most importantly for a chat: The Speed. This is actually the fastest chat which I've ever seen for xenForo. It feels like you are talking to someone in a game chat or whatsapp and that's awesome. I also really like the tagging system. It makes the communication with others easy and quick. The settings/options of the addon are also well written and easy to understand. I'm really looking forward for some awesome updates for that addon! But for now I'm very satisfied with that Chatbox Addon! A big recommendation for everyone who is searching a good live chatbox!