re:What do you mean by ability to restore from the image?
It often comes up (eg, on the Leo LaPorte radio talk show - computer tech guy) that people will make a backup of their HDD, but never test that the backup is valid/useable (be it an image or otherwise like a True Image [TI] backup that can be a hybrid image - compressed backup file that has omitted unused partition space & swap file). When the individual finally needs to restore their system from backup, they then find that the backup (or backup system) doesnt work.
When I evaluation tested TI as a candidate, I created a test bed (two HDDs one with a valid OS partition installed on drive 0) to test the TI software. This allowed me to try the various available options provided by the TI software & verify that I could successfully restore the drive 0 OS partition using the image or backup that was created on drive 1 as a backup of drive 0. Some idiosyncratic "snakes in the grass" were uncovered for the TI software when used with my hardware suite. These were documented & the exact procedure/steps which were verified to successfully work were written down for use as the procedure to be followed for backup & restoration (includes by-the-way hardware setup such as use of 1394 vs USB).
In general with my big machine which employs four different OS partitions, I use Drive Copy [DC]. It is very precise & very fussy. The HDDs cannot be marginal (eg, no SMART alerts - DC does a lot of drive integrity checking before it will commence & I suspect that DC also then performs an incremental R/W surface scan/check to that portion of the HDD that it is writing the image to. Any R/W operation that fails criteria results in an abort error message!