Thank god they updated Pocket Casts. I really liked it for awhile and then it became cumbersome to use once I got way behind in what I was listening to...the way that it is organized gets confusing, such as when you download episodes they disappear from the list, just kind of weird stuff it does.
Hopefully it is better now, not that it was bad before but I do think Podkicker is easier to use but didn't do as much, and maybe not as well.
Edit: Just looked at Pocket Casts for a second and it looks pretty brilliant the way it is set up... now you go into a podcast feed and if it is downloaded then there is a play icon next to it, and if it isn't there is an arrow to download, if I'm understanding it correctly. That is a nice improvement and makes it much simpler.