I recently had a root canal operation performed by Dr. Mirras. I had heard all the stories before however was quite surprised to find that after the initial numbing, I didn't feel anything, nothing at all. The next couple of hours/days were fine also, and even after my second visit to finalize things I was never in any discomfort.
I hadn't been to Dr. Mirras before however I would certainly recommend her for root canal therapy. She clearly knows what she is doing, has pleasant staff, and was able to make things very easy and confortable.
She sings/hums while she works, but that was perfectly fine with me.