Which faction is the most interesting to play as, and what strategy do you find most engaging?

In HoMM 5, the autobattle option works very well. In HoMM 3, it was a rather silly option that could only be used if you attacked with 10 Titans against 20 Archers. Even in that case, the computer made incredibly stupid mistakes – it could spend its last magic points on a completely useless spell. There were also instances where it would remove a heavily wounded dragon from the battle along with nine perfectly healthy units and replace them with the rest, letting them die pointlessly, and then bring the dragons back into the fight! But in HoMM 5, the computer plays very intelligently during autobattle! Once, I reloaded the game five times to defeat an enemy hero without suffering heavy losses, but I couldn't do it. In the end, I turned on autobattle and was surprised at how the computer managed to win with minimal losses, while I couldn't!