None as of yet, though Feedly is the only contender at this point for me. But the big deal breaker is the lack of search (which was present when I initially loaded up my Google Reader subscribed feeds, but the Feedly overlords deactivated when the flood of new users made it a performance issue). It is on the !todo! list so I hope it is restored. Without search, an RSS reader is just not as useful, at least with my volume of subscribed feeds.

Also, skeptical that Feedly will be able to thrive on their own without the Google backend. Hope I am proven dead wrong on this though!

Tried some of the others but they either choked on my subscription import (>3K feeds) or there are serious performance issues. The Old Reader truncated my Google Reader import at the letter 'H'. Yoleo UX locks up on me constantly and every click seems to enact a multi-second delay in response.

Another reader alternative tried was feedwalk.com -- again, like Yoleo, it imported all my feeds, but is plagued by performance issues.

In sum, Feedly is the only viable alternative, but the lack of search limits its value for me.