Depends what you care about, and what backup solution you use. I've had headaches over Acronis, Ghost, and Paragon from corrupted image, disk error, new hardware, bad media, etc where nothing beats a good old cloned disk.
Also cloned to bad hardware. So lessons learned always understand, test, and verify your backup process before ever trusting it.
Yet such a waste of space and time. If you have the space, time and resources (meaning extra like disk) go up one and mirror raid. If you are more concerned with the 'state' and rather save space, Windows System Image actually works very well here (much surprise!). Save backup time with reduced backup file sizes.
If you manage a slew of OS Installs and want to back them all up, WSI probably not for you. If you are looking for a simple back to basics good home solution for Windows 7, nothing beats it.