I don't care for "image" backup programs like Acronis because they can fail and you'll never know until you try to mount the backup and restore things. Such programs create a single giant "image file" which itself is risky in that if anything goes wrong anywhere in the file chances are anything beyond the point of corruption is toast.
I use BounceBack. It's fast, cheap and easy to customize. Rather than making an image file it does actual backups of indvidual files you wish to backup. It can be set to run automatically,or do it on your schedule. In fact, years ago Seagate included this with their external drives. I have above 500,000 image files and several thousands videos spanning about 6 TB on multiple hard drives. All backed up this way.
