Good, cheap, reliable. You can use your own Amazon S3 account and key, and you need not give the key to JungleDisk; if you don't share your key, you can't use

Good, cheap, reliable. You can use your own Amazon S3 account and key, and you need not give the key to JungleDisk; if you don't share your key, you can't use some features that involve JungleDisk's own servers, but backup and restore work just dandy with the encryption done once on your own computer. Very efficient and cost effective.