Another vote for Macrium.
It is by far the most efficient imaging app. Worked flawlessly on every o/s - including beta builds that I have tried it on.
Not quite as many features as some - but you may not want all those bells and whistles.
It is so small and fast , waiting for others to do their thing is tedious.
My problem is solved by ditching Acronis and installing Marcium Reflect (Free version). I also ran the Windows Backup and made a complete image with it also. I've got my images on separate backup drives (both internal and external) so I feel pretty safe now.