I use Bazqux, which is absolutely superb:

* Rock-solid, I haven't seen an outage

* Impressively fast (Reeder updates from it much faster than it ever did with Google Reader: I can get all my feeds in one Tube stop's worth of wifi)

* Has good features like filtering (goodbye "latest podcast" spam) and highlighting (only see certain posts from high-volume feeds

* Great keyboard UI on the web.

Can't recommend it enough. I understand it also has an interesting tech stack behind it too.