Paul, Macrium is a drive backup program. I had been using Acronis True Image for a long time, but Acronis let me down twice trying to restore hard drives. Acronis didn't get a third chance. I moved to Macrium (purchased full 4 PC version) and it does backups faster than Acronis and the Macrium procedure to create the WinPE bootable rescue disc is a breeze as it has a built in utility that automates much of the procedure. Acronis requires buying the extra Plus Pack to get the WinPE disc creation and even then much of it is a "manual" operation.
Acronis' regular "rescue disc" uses Linux, and I had problems with the Linux version on two newer PC's (both Z77 motherboards). On one it would boot up but I could not select a "target" drive (the drive to restore the back up to). On the other one it boots up but there is no mouse or keyboard control so I couldn't get any further. Both of those systems will boot a Linux distro and run without problems. I went to the WinPE versions, which does support both keyboard and mouse (and also UEFI BIOS). The WinPE supports all the hardware on the PC's.
One thing I noticed with the Macrium bootable rescue disc is that part of the procedure when it creates the disc is that it profiles the hardware in the PC. Because of that I made separate bootable rescue discs for each of the PC's I have. I haven't tried the rescue discs on other PC's (need to do that some time) to see if the specific hardware profiling makes a difference.
After uninstalling Acronis, I found I had a problem attaching external USB connected hard drives and flash drives. As it turned out, during the Acronis uninstall it left several Acronis programs and many fragments in the registry, which caused my problems. I tried manually editing the registry to get rid of left over Acronis but there were still many traces in software and registry left over. I finally found an Acronis utility that "cleaned" any left over Acronis. I used to recommend Acronis to my clients - no more.