If you have played Disciples II and enjoyed it then you will probably not enjoy this. One of the biggest reasons for me is becuase the units just don't look epic anymore! They are small, less agressive looking, and look too similar after a level-up. Similarly the battle system is just like King's Bounty or HOMM which makes it feel like a cheap rip-off.
I can say that the music and graphics are satisfying enough for a modern game but it just hasn't got that charisma of Disciples II – hence why i believe the game is good in it's own right, but leaves something to be desired after Disciples II.