I took a peek at Newsblur. This Reddit-ish UI puts me off too (plus no dark theme...), but I can't rule out it beats Feedly in terms of functionality.

I wonder if their mobile app is any good - while Feedly the webapp is ok, Feedly on Android is severely lacking. Always loading news updates when it's opened (doesn't allow you to skip this step), and if you switch away from it, there's no guarantee it'll return you to the same place... lame