Both NFC stands and QR codes send customers to your Google review page. The difference is how many steps it takes.
QR codes
The customer opens the camera, lines it up, waits for it to focus, then taps the link. It works, but every step is a chance to give up.
NFC tap
The customer holds their phone near the stand and the review page opens. Most newer phones support it with no app.
Which one to pick
If you want the fewest steps, a tap stand wins. The RankOne stand is built for exactly that, right on your counter.