I have! I have been using The Old Reader for a month or two and I really like it. It looks almost exactly like Google Reader and functions the same way too - you can use j, k, and the spacebar to navigate through your posts just like in Google Reader. You can group subscriptions, save them, and even share them. The Old Reader has a social media aspect to it in which you can add friends and share posts with them.
A lot of people are switching to BlogLovin, which is great, but it doesn't allow you to import Craigslist subscriptions, which I would have a hard time not following!
If you haven't found your replacement yet, I hope this helps! There are some very visual options out there,but I just wanted a very straightforward text-based RSS reader and found what I was looking for in The Old Reader!