JL,
Have I ever steered you wrong?
I've tried Acronis and used it for Win7 early on. But Ghost 15 finally was released, and blows the doors off it!
You can even make a Ghost Image of a Drive without installing Ghost onto the image. You Boot off the DVD and do it from there. An awesome feature I used to do with DOS versions of Ghost before Symantec took them over.
Ghost back-up images are smaller (~20% as I remember) but Win 7 OSes grow quickly to be too large for even Dual Layer DVDs. So a separate Drive is the right answer (or Blu Ray Burnr if you are Flu$h

)
But then what do I know...