Both QR Code types have their own benefits. 

Dynamic QR Codes:

• Can be edited after they have already been printed 

• Track visitor statistics because of the used short URL which redirects the user to your content

Static QR Codes:

Have different benefits, but cannot be changed later.

For instance, a static Wifi connection QR code works without the user having to have access to an internet connection, whereas a Dynamic Wifi QR would first require the user to have access to the internet and then access your final content. 

We recommend always figuring out a use case for in terms of what QR code type works best for your situation. A business card will definitely benefit more from a dynamic QR code rather than a static one.