It's often discussed here at TR or on countless blogs and websites. Everyone has his/her opinion. I have heard good things about Easeus Disk Copy http://www.easeus.com/disk-copy/
Mainly because it is good and free.
What are you currently using and how do you perform the backups?
Me personally I swear by Acronis. I have been using Acronis for many years now. Usually very fast IMO, relaiable, easy to configure, etc. Plus I am just so comfortable with it. It hasn't always been a peasure to use at times, typically with RAID support in past.
Acronis has a Management console redesigned in Backup and Recovery 10. http://www.acronis.com/backup-recovery/advanced-server/
You can simply manage an entire army of backup agents deployed on your LAN. If you use Kaseya or something similar, it integrates perfectly...with a script.