You may have this question : Launch X431 V 8 inch and New released Launch Diagun IV which is better? How to Choose?
Do not worry, here is the comparison table between these 2 devices:
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.
Hope it helps