Ask HN: What is the best platform to host a developer community chat?

Hello everyone, I'm the maintainer of an open-source project with around 300 active community members in Slack.

Since Slack is good for some reasons, first of all, many developers have slack open all day, I still don't know if it is the best platform to host a community.

I've tried Discord in the past but the User Experience lack a lot in my opinion, and the app is not as used as slack?

What are your advice on that?