I have an unusual but effective backup routine. 2 external hard drives, rotating weekly to offsite storage, backing up the same computer. GFI Backup worked perfectly for this in a windows environment, but I'm looking for a Mac solution. I need it to do the following: 1. Run two backup sets manually. Scheduling is completely useless. 2. I prefer differential. If I accidentally delete a file, I can pretty much always recover it from the other backup. Incremental with versioning is equally useless for that reason. 3. Needs to be able to backup local and external drives (laptop has both). 4. Freeware is preferred. 5. Simple is preferred. 6. I prefer a backup that's just a naked copy. I encrypt the volume (truecrypt) and usually format in exfat so I could pull to another platform in a worst case scenario. Suggestions?