Now I mostly use the win 7 imager for the OS disks. And create the repair disk for restoring.
The trick is to rename the image folder so it does not get written over next time.
The w 7 imager always wants to include the OS disk, so, when imaging non-OS disks I use macrium.
I also use the basic Sync Toy to copy new audio files to external disks. And the non-cw samples folders, and vst folder.
I create a new image for each of the OS disks in the music comp, after installing any major drivers, and OS updates. Only takes about 30 minutes per disk with verification.