How to tell Launch X431 Diagun IV from Launch X431 V 8.0 inch

Launch X431 V8.0 inch tablet and new Diagun IV which is a better OBD diagnostic scan tool to choose from?

Check the detail table comparison below:
Launch-X431-V-8inch-and-X431-Diagun-IV-Comparison-List-1 Launch-X431-V-8inch-and-X431-Diagun-IV-Comparison-List-2
In conclusion:
The major difference between X431 V and Diagun IV lies in:
1. Lanch X431 V support much more vehicle brands, like Indian (Mahindra, TATA), Australian Ford, Holden, Malay Porton, Perodua, Brazilian Fiat,GM etc, which Diagun IV scanner does not support.
2. X431 V comes with much more language than diagun.
3. X-431 V 8inch supports special functions like gear learning, immo key programming, diagun IV does not support.