A clean install or cloning
The best way to set up your new WD Black is a clean install. GadgetGuy has instructions here.
WD has disk cloning tools here but heed my warning – cloning reproduces any issues you may already have.
GadgetGuy’s take: WD Black SN750 PCIe NVMe is a real challenger
I have not tried Seagate’s Firecuda yet, but it is supposed to do 3450/3200MBps, so you are spoiled for choice at the premium end with three respected brands all vying for supremacy.
At this stage, I will say Samsung is the safest bet – if only because they have been doing SSD for much longer and design and make it entirely.
But that is not to rain on WD’s efforts – it too has a great Toshiba heritage, and it is a well-respected storage manufacturer. And its gobsmacking fast (as they all are).