Despite my general dislike of Norton products, I have Norton Ghost 9.0 and it works well for me. My USB external HDD came bundled with Acronis but I bought Ghost instead - I had heard apocryphal tales from those who had used Acronis but when the moment of truth arrived it failed to install. I have checked that my Ghost will boot from the CD (needed in case of catastrophic failure) but I have not yet had to try it 'in anger' and actually restore an image.
I would imagine that others prefer Acronis and have bad tales to tell asbout Ghost. Such is software and individual preference.