Discord or TS3

I think discord is way better imo because there is nearly always new updates.

Teamspeak I never really use anymore, because I'm not even sure they update it anymore, and if you want to host your own server you got to pay a company or open ports yourself and in discord you don't all you do is make a server then give the link out.

Plus on discord too there is free bots for the server, and I believe there is a partnership program on discord too.