Reading. Always. I absorb information so much more effectively via text. Audio is too slow and too easy to inadvertently tune out.
Personally I just retain it much more poorly under the best of circumstances, and stop paying attention at all for minutes at a time under the worst.
But other people have the opposite experience. Depends on who your audience is.
But if I’m part of your audience, please provide transcripts or I’ll just navigate away.
Feel free to join the upcoming launch list: https://www.producthunt.com/upcoming/2aud-io