If not in person, I prefer asynchronous conversation. It doesn’t require my constant full attention, so if I’m working or something I can still engage; and if it’s any kind of serious conversation (whether emotional or just reasoning out something complex), I can take my time to think about an answer to ensure I provide a complete and accurate (to the best of my ability) thought.

That said, no one ever seems to respond to texts, even if they started the conversation. It’s a lot harder to do that in a voiced conversation.