I use Acronis True Image. Fantastic program. I image my 227gb drive at work in about half an hour. It only has about 30gb of space used on the drive though. I will say that it works great because i had to restore from image last week due to a problem with a new software installation and I was able to restore my machine in less than an hour. I am not familiar with other imaging programs. With Acronis you do the image right in Windows. You do not have to go to a dos prompt or anything like that. They say you can keep working on things while doing it, but I close all open programs just to be safe.