I'd been on The Old Reader ever since Google Reader shut down. Tried Bazqux thanks to a post here on HN and switched because it's much faster. Very noticeable with a lot of subscriptions (I have over 100).

Only relative downside is that there's no integration with Firefox's "Subscribe to this page" button, which TOR has. That means you need to use a javascript bookmark to subscribe to new feeds, which feels kludge-ey in comparison.