Audiologs are fine so long as they don't clash with the game audio. One thing that bugged me in Horizon was listening to a log and then Alloy would begin a brief conversation; it happened a few times, leading me to stand and listen to the logs as I got them rather than continue moving to avoid that. A quick & easy fix would have been have the game automatically end any log playing before a conversation would start.
Audiologs also live and die on good voice acting. Bad writing hurts, but bad voice acting makes them unbearable. I personally like text files better, but a well-executed reading of the text is welcome too.







