The other day I finally canceled my Jungle Disk account. I had canceled my Amazon S3 account awhile ago, but forgot to also cancel the Jungle Disk account.
The main reason was price. The backup set of my personal documents is > 500gb, so using Amazon S3 was costing about $75/month. I can buy a 750 gb hard drive on Amazon for $70 and a 1 TB one for $85 if my data starts growing even faster.
So my new backup procedure is each month I buy a new hard drive and do a complete backup of my data drive. Then I do daily incremental backups for the month. At the end of the month I take that drive and store it offsite, buy a new drive and repeat.
On a quarterly basis I also take the latest backup and make a copy on BD-R so I’m not completely dependent on magnetic media for backup.
Maybe you should check out something like CrashPlan (crashplan.com). They have cheap plans with unlimited storage. I haven’t tried them yet but i probably will. I’ve read a lot of good reviews however. Other options are carbonite and kabooza, but crashplan feels better
Check out CrashPlan – many more features, far less expensive, unlimited plans, etc. Pricing comparison is here: http://www.crashplan.com/consumer/features-compare.html
Best of all, you can use the drives you already have and create your own online backup cloud – for free!