I've been satisfied using Downcast for a long time now. US $3 (though I have used the tipping feature because it's provided me ample value). In particular, its sorting organization matches my preference, which is a list of podcasts that I can sort based on unplayed episodes (among other sorting options). Unless you're viewing the distinct section of the app for adding episodes, there's no portion of the interface trying to promote shows. That's not a presentation I ever want, so it's good that it's easily avoided.

Most beneficial for me is its customizations that can be applied to all shows or configured for individual shows. For example, all episodes for all shows can be set to play at 1¼x speed, but one show could be set to play at 1x speed. For me, the interview format can be at the faster speed, but the music podcast is better at regular speed. Similarly, users could set all shows' episodes to start at the 30-second mark because of, say, opening ads, but a specific show could be set to start at a different time because its opening is unlike the others.

I listen to enough shows that these configuration options make the app great for me. It's been a long time since I tried alternatives, but none of them ever stuck for more than (at most) a few days because the presentation or lack of customizations were less satisfying or convenient.

Truthfully, just writing this has compelled me to give the developer another in-app tip. It's been years since I did that and I must average at least 20 hours of use a week.