What's the best off the shelf solution you've found? I've been trying a few different apps to read my queued articles to me, but all of the voices are awful.
However I also got tired of manually extracting text and running my script so now I mostly use: https://www.listenlater.fm though on this I just use the “Matthew”. For 5-10 min articles it doesn’t really matter, you get used to the voices so long as you can do something else in the meantime lol.
EDIT: I'll also add that although there are *many* TTS apps, the true diversity is far less because most of these services are using Amazon Polly, Azure, or GCP's equivalents.
The best TTS system for generating ebooks (that I have used so far) is MacOS's TTS. The process is fairly straight forward; first break the book into sentences using the standard heuristics. Run each of those sentences through TTS to generate an audio file for that sentence, then create a subtitle file with the text of the sentence. Then stitch them all together with ffmpeg, optionally adding a dummy video track if your media player of choice needs one to display subtitles (mpv does not, but some do.) Now you have a subtitled "audiobook."
MacOS's TTS has a robotic quality to it, but it generally works and you can become accustomed to it fairly easily if you give it a chance.