Podcast client feature comparison

Hey,
here is a goodpodcast client feature comparison: http://tinyurl.com/podcastclients
You have to ask https://twitter.com/timpritlove for access to add features of Doggcatcher to the table.
And there are a lot of interesting new features, that would be nice to be implemented.
My most missing feature are chapter marks! http://podlove.org/simple-chapters/ or http://id3.org/id3v2-chapters-1.0
Regards,
dervomsee