IDrive is one of the better-value hosted backup services. For a yearly fee you get a large block of cloud storage, backup for multiple devices under one account, disk-image support, and even physical courier recovery for big restores. If you want a turnkey service that includes the storage, IDrive is a strong pick.
BackupKit is the opposite arrangement: it doesn't include any storage. It backs up to the storage you already have or choose — your NAS, an FTP/SFTP server, your existing cloud drives — and never holds your data itself. Which model wins depends entirely on whether you'd rather rent storage from your backup vendor or own it.