If I “had” to pick one for YOU, I would probably suggest the Author.
If it were MY money I’d buy neither, I’d spend some extra on a Wildcat Tiger Wayfarer.
Admittedly over twice the price but worth it to get rid of the wagging dogs tail. It needs a dry bag but so does every other saddle pack really.
I couldn’t willingly go back to big bag like the two you mention.
Another tip is don’t get the biggest as you will fill it with the “what if’s”, keep it small and your kit list won’t balloon and get too heavy.