Mine is the Autel MaxiCheck MX808. It has pretty much all the cars made from Mercedes Maybach to Dawoo and everything in between, and no maximum number of VINs to use it with.
With her Macan, I just plug it it, and it automatically reads the VIN and talks to the car. I have only used it to reset the oil change warning so far, and read the battery status. It has one year of free software updates. Since I don't expect to buy any new cars anytime soon, I will not renew the license and just stay with the cars it has.
It is just a tablet based computer, and runs the software and they include the cables and a neat little carrying case.
https://autel.com/us/product/maxicheck-mx808/