Ultimately, I ended up with Digg Reader. Don't remember exactly how many platforms I tried, maybe a half dozen?.

Feedly was one contender, The Old Reader was another.

The primary reason I settled on Digg is that they came out with an iPhone app relatively quickly after they launched. Regrettably, their iPhone app has been broken for maybe 6 months now. Digg used an OAuth web-view embedded user agent. Google appears to no longer to support such requests from apps. Digg needs to update the app with Google's other authentication libraries.

Might have to find a new platform again. sigh...

Annnnnnd I've just opened an account with inoreader. Probably will make a jump over. Digg has annoyed me long enough. They can't find / pay a reliable IOS developer.