Ubuntu alternative to windows Acronis True-Image

Don't want a full disk image, that is wasting space. I have a 250GB drive, that is only using 75GB. So I could only get 4 images at most on my 1TB drive.

I am trying to decipher the Clonezilla documentation, it drives you round and round in circles. I have used Clonzilla to clone a drive and it sounds like it might do what I want, but so far I am not convinced.

Thanks, Fred