I would not hesitate to recommend Computer Doctor. They have tremendous knowledge of all computers including all MAC's. They are polite and prompt. Please don't waste your time or money with the so called genius bar at Apple. There is nothing genius about them. Last year they cost over $9000.00 dollars. Our computer was built for audio recording and when we took it in they attempted to do a "migration." They should have known better as it wiped out the operating system. They have no idea what they are doing UNLIKE THE STAFF AT COMPUTER DOCTOR. I give them 5 stars.