There is a known issue with WD drives responding slowly?
What makes the other tools inappropriate?
Do I understand this right that I need to download this other program with a Linux OS on another USB as a first step? I wouldn't want to just use a portable drive? This is a standalone tool?
This is better than Marium Reflect?
The "WD slow responding problem" is a widely known issue in WD drives, and has been for two decades. Professional tools such as PC3000 (US$10K) can deal with this problem with a single click by hacking two firmware modules. HDDSuperClone incorporates the same firmware hack, AIUI. The root cause of the problem is that the drive bogs down during error recovery, so pro tools turn off this feature.
Any Windows based cloning tool is inappropriate because Windows interferes with error recovery. Linux tools can get much closer to the hardware. HDDSuperClone has a Live CD and bootable USB with a GUI.
The cardinal rule of data recovery is never to recover the same sector twice. If you can read it, save it to a healthy destination drive. Partition Wizard pointlessly scanned the entire drive and threw away every sector. During this time the drive would have been degrading. Instead, you should have been saving each sector to another drive. Had you done this, you would now have a 90% clone, or better, depending on the number of bad sectors.
BTW, the partition metadata are stored in sectors 0, 1 and 2, with copies at the end of the drive. A tool such as DMDE finds these metadata within seconds. It will only perform a full scan if the user specifically requests it. That's because the author has some background in data recovery and understands that sick drives must not be thrashed.