iBackup does not back up the disk image, only the files and the settings on your Mac (and those of individual users). This makes the back ups quicker to do, but means that should something happen to your Mac, you must first install the OS before restoring your files and settings. Not a big deal, but something to note nonetheless.
iBackup has a simple to use clean interface that fits in well with the Mac aesthetic. You choose from a list of every file and setting on your computer and can back them up all at once, or piece by piece. The ability to pick and choose is a big plus, especially since you may have a smaller hard drive and need to either burn the back ups to DVD or find some place else to store them, making backing up your whole Mac impossible all at one time. Not to mention it takes less time to back up small portions than all at once.
iBackup also has a handy plugin feature that automatically searchers for new plugins when you load it. Then you can scroll through the list and pick the ones you would like to install, while leaving out the ones that don't pertain to you.
I tried backing up a little over 9 GB to see how iBackup handled and it worked quite well. It took under 10 minutes and everything looked great.
