It has my favorite user interface, but I feel that it bogs down after viewing a series of images. I also feel that development has stalled a bit (edit, I was mistaken: they just released a pre release).
I haven’t found a better one, though. Next best so far has been Racoon.
I do this as well, but I use Libation: https://github.com/rmcrackan/Libation
Super easy, barely an inconvenience.
Then I use Audiobookshelf https://www.audiobookshelf.org/ to host the books and their Android app to play them.
A few I haven’t seen mentioned:
Also +1 to the usual favorites: Firefox, Termux, Nova, etc.
Kubuntu currently is working really well for me. I’m not a hardcore Linux user (used it lightly for many years, daily driver for only couple), so it’s nice to use Ubuntu where there’s plenty of online answers. Plus I like KDE. So Kubuntu is a good fit.
I recently tried Fedora for a while, but I just had problem after problem with my hardware. It was good aside from that.
The Punt for Red October
(Assuming American Football)