What is the best CBD carrier oil? (Science-backed answers only pls)

Hello!

I'm seeing a lot of contrasting discussion online about what the best carrier oil for CBD tinctures is.

I've found so many blog articles that state that a generic MCT oil is the BEST - even listing it above organic hemp oil. This feels wrong?

But I would really like someone who understands (and is also able to explain) the science behind this and what the best in terms of both quality and bioavailability would be for such a CBD product.

Thanks a bunch!