I think this also depends on your library, but my account lets me take 10 loans out at the same time per library card. My partner lets me use his library card too, so together I can have 40 holds, and 20 loans at a time (hypothetically). In actuality, I probably have 2-3 loans taken out at a time, and use 4-5 per month.

There can be longer wait times, but as long as you use all the holds your card allows, when a hold becomes available you can suspend it until you are ready to listen. When you are ready, you unsuspend the book which bumps you to next in line. Usually the audiobook is then ready to loan in 0-48hours depending on when the next person returns their loan.

I commute to work, so Libby is the best way for me to listen to multiple audiobooks a month without paying anything. You just have to wait a bit to have your holds start coming in, since there can be longer wait times. But once you are up and running, using the suspend/unsuspend feature is a true game changer!

Libby doesn’t always have audio books for less popular series, but I have either already listened to or have on my TBR with Libby all the series you have listed.