I've found FeedHQ[1] paired with Reeder[2] to be even better than Google Reader for my purposes (checking hundreds of feeds daily, archiving interesting posts locally, and syncing read posts with iOS).

[1] https://feedhq.org "Import and export your data as OPML, use the API to back it up or build amazing apps on top of FeedHQ. You can even run your own FeedHQ instance or help improving it, it's open-source!"

[2] http://reederapp.com/mac/ "A news reader for Feedbin, Feedly, Feed Wrangler, FeedHQ, NewsBlur, The Old Reader, Inoreader, Minimal Reader, BazQux Reader, Fever, Readability and Instapaper."