[CentOS] Best backup software for linux

We are running backup softwares for incrementals/differentials and full backups 
with variouse softwares currently using dirvish scripts + amanda .. what is 
everyones views on other opensourced backup software? is there anything better 
or other options we have missed?  We are looking at backula as an option? any 
thoughts?



Thanks
- Nathan
- http://www.linuxcare.ca