There is an extensive review of 3 OS X Backup Utilities written by Charles Moore. The review is of Synk 5.0 Backup And Synchronization Utility, Data Backup 2.0.2, and La Cie SilverKeeper 1.1.2.
This review is great, going into detail for each utility; it includes screen shots and links. And since backing up data is critical for any OS, this single review gives you a heads up on 3 interesting backup utilities.
Full Review: >> Charles Moore Reviews Three OS X Backup Utilities