Dr. Yee stayed late to do an emergency root canal on me which I appreciated. (It took until about 6:45 pm). It was totally painless after the novocaine he injected. He also thoroughly explained what he was going to do, including drawings. You will find that the staff is extremely nice, particularly the receptionist. And the offices are nicely set up, with tranquil music playing.
I have never been to an endodontist before, so it is hard for me to give an overall rating, but I'd say a pain-free root canal in a pleasant environment from a friendly dentist adds up to a high rating.