I've been using Castopod for over a year. I deployed it for my podcast using https://linode.com on Debian after my last web host lost my data in some sort of internal mistake (or rogue-employee deletion). I used the experience as a chance to learn some server administration and to "self-host" our own show.

It's been a great experience. The developers and community is active on Discord (before that, I had only used irc and webchat) and they are always willing to help. The software is always getting new podcasting 2.0 features and actually feels exiting again, similar to podcasting circa 2004.