Is there actually something broken about your current setup, or are you more just wondering if you're missing out?
Discord's still the go-to for gaming voice for good reason. The latency is genuinely solid, the interface works, and basically everyone already has it installed. Unless you're dealing with constant connection drops or your group specifically wants features Discord doesn't have, there's not a ton of reason to uproot. The network effect is real - switching platforms means getting people to download something new, set it up, and migrate all your server stuff over, which is friction for what amounts to the same functionality.
That said, one thing people don't talk about much is muting Discord entirely when you're in a game that has its own built-in voice. Games like Valorant, CS2, Helldivers 2, and a bunch of others have solid in-game comms that'll outperform Discord since there's no extra hop. So instead of switching platforms wholesale, just use Discord as your main hub for organizing and chatting between matches, then drop into game voice when you're actually playing. Best of both worlds without the migration headache. You keep your community in one place where people are comfortable, but you're not forcing subpar voice quality when the game itself has something better built in.