Your own TeamSpeak server on low-latency private hardware — custom channels, your permission structure, as many slots as your community needs.
Discord is great for hanging out — but competitive clans still run TeamSpeak for a reason: rock-solid low-latency voice, proper channel hierarchies, and permissions that mirror your command structure.
Tell me roughly how many slots you need and how you want the channels laid out — most TeamSpeak servers are live the same day. Bundle it with a game server or website for a better rate.