The "best" version of the ISO is one you create yourself, as it can include both the restoration software and the Universal Restore tool in a single bootable environment. Creating Bootable Media with Acronis Universal Restore
Optionally add specific drivers for your new hardware (like RAID or storage controller drivers) so they are included in the boot environment. Make Hardware Changes Easy With Universal Restore - Acronis
To get the ISO, you must follow the legitimate path: