See your own usage scenarios! Because the biggest difference between the cellular version and WiFi is that the WiFi version can only connect to the network through WiFi, and the cellular version can connect to the network through the cellular data of the phone card and WiFi.
If you are always at home or in a WiFi situation, you should buy the WiFi version. If you travel a lot, buy the cellular version. For reference only
The IPad tablet computer is generally bought cellular version is better than the WIFI version connection, if you often use the tablet computer outside it is recommended to buy a cellular board, if it is often used at home do not go out you can use WIFI connection