backblaze
I've been very happy with offsite backup using BackBlaze on my Macs. Very simple to use and setup, and you can set an encryption key so all data is encrypted before being sent offsite. Works well for up to a few terabytes, $5 per month per computer.
I actually find offsite backup more important than these contraptions. Something like CRashPlan is good because it's on a server in another location altogether.
I've been very happy with offsite backup using BackBlaze on my Macs. Very simple to use and setup, and you can set an encryption key so all data is encrypted before being sent offsite. Works well for up to a few terabytes, $5 per month per computer.