My husband's MacBook Pro suddenly started running extremely slowly. He tried what he could to get it running better, but it did not help, so I sent him to PRO, as I'd used them before with good results. He was very happy with the customer service and the repair. PRO kept him informed each step of the way and he got his laptop back in a reasonable time and it's running great. He felt the price was reasonable for the diagnosis and replacing the hard drive. We highly recommend PRO for sick computers.