Slack vs the alternatives — what are teams actually moving to?

"Switch off Slack" is a popular idea until you actually try it. For teams that have moved (or seriously evaluated moving), what did you go to and how did it land?

• Where did you end up — self-hosted (Mattermost, Rocket.Chat, Zulip), or another hosted option?
• What did you gain, and what did you give up?
• How did non-technical teammates handle the change?

And if you looked into it and decided to stay put — that's a useful data point too. Why did you stay?