Clonezilla is partclone, the main benefit is the compression so you don't waste space on emptyness
Discussion
What advantage does Clonezilla have over something like rsync?
Does rsync use zlib compression, does it restore partition tables and bootloaders? I personally like rsync for syncing between servers but i recently stumbled upon clonezilla when I needed an install iso for my thin client project. It has a feature where it can turn a backup into a bootable iso so that was perfect. It can alsp restore vhd files to real hardware which was also something I needed. For most tasks I prefer rescuezilla since its a GUI for it. But the ability to spawn pxe servers and make isos sets the text based one apart.