My wife is a professional photographer. We wanted the best external hard drive that money could buy, so the apple store suggested we look at G-Tech drives. We bought a 1tb eventually, but have had problems with it. It seems to love to unmount whenever it pleases. This has made my wife upset and she is always talking about getting a Mac Pro, just so we don't have to deal with external hard drives. Are there any good external hard drives that are reliable and will let my wife work without the frustrations of a failing disk? Do you think I got a lemon with the G-Tech, or do they pretty much suck?