Best RSS Readers
1. Digg Reader
Download: Digg (Android & iOS)
NewsBlur also has the most generous free option out of all the paid services. For free, you can follow 64 sites with nested folders, the intelligent filtering, and an option to share your favorite stories to your own "blurblog" which others can follow. The one annoyance is that you don't get the "River of News" feature, which allows you to read all sites in a folder, you have to go through site by site. However, for just $2 per month ($24 per year) you get the River of News feature, unlimited sites, privacy options on your blurblog, and sites updated 10x more often.
Download: NewsBlur (Android & iOS)
3. Feed Wrangler
Feed Wrangler does have a free reader app and a free podcasting app for iOS users who subscribe to the service, unfortunately there is no official Android app. But, the good news is that Feed Wrangler offers a solid API, so you can also use popular reader apps like Reeder (iOS) or Press (Android) to get your news.
Download: Feed Wrangler (iOS)
Just like Feed Wrangler, your best options for mobile apps are 3rd party apps like...
5. Reeder 2
Download: Reeder 2 (iOS)
Download: Press (Android)