I like both to be honest, but at
@tkh points out, physical books are less fatiguing to the eyes.
Also, books are super cheap - before Coronavirus, I bought a Dan brown bundle with the Davinci code, and 4 other books for £5. They were basically new, so that was a right bargain!
I can't get on with audiobooks because I can't absorb them. I don't like sitting down doing nothing, and I get bored, but that's the only way I can get into audiobooks.