The short version: The only thing I need backed up is the Documents folder. So I am looking for an app that is simple and bullet proof. I just want it to backup that directory to an external drive and do incremental backups every hour or so. The details: I run a VERY lean computer. The only apps I have installed are QuickBooks, Open Office, Chrome, and Adobe Reader. All of my documents are stored in the Documents folder, I only have about 4GB in there however they are extremely important to me and my business. If something happens to my computer I have no problem installing a fresh new copy of OS X and downloading those 4 apps listed above. I have no need to restore anything, that's why I don't really even need Time Machine nor a cloned copy.