We have not seen a new HD utility for Macs in many years that was actually worth buying. Many just repackage what is in Disk Utility....with no real/significant additions.
This one may change that: Hard Disk Manager For Mac.
Check out all the features. Many Mac pro users have these tools in other software.....but if I were looking for a one stop choice to clone, backup, resize, format, migrate.....this would be at the top of my list. Bonus stuff: Bootcamp resizing and migrating.
Have not tested it yet, but looks very promising!
UPDATE: Link fixed.