To answer your question, no, I have not had a successful taper. i've only een on prednisone once and it was very hard for me to taper off, I had a relapse and a lot of instability but luckily, I finally was able to get off.
As for other folks, I have seen quite a few here who were able to get on and off prednisone in a short course without return of symptoms. I think a lot of people who post here come seeking advice because they are having a tough time.
Interestingly enough, I came here before I had such troubles and then it happened to me.
At least I was aware of the potential for these problems, I knew how to handle them and I had support.