The biggest issue that I have with Overcast right now is that its design doesn’t really match my situation of having some podcasts where I’m a completionist and others where I want to pick and choose certain episodes to listen to. The problem with the second group is that it’s a lot more work to delete the episodes I don’t want than to pick the ones that I do.
The single feature that makes Castro so compelling to me is its queuing system. It's hard to put into words what's so amazing about it, so here's a video I made a few years ago (my channel's 6th video!) about why I love it.