I use Acronis true image its ok but the only problem is you have to keep making backups periodically on external data / or your hard disk partion, you can only go back to a time of which you had a previous back up, if you forget to do an incremental backup for a long time and your computer wont start coz of a virus or something similar you have no choice but to
revert to the last incremental backup you made which could be a long time ago.
Has anyone tried both programs and give an opinion?