I pretty much liked all of them except the first one(too simple)and the last one(too flashy and 3d). Homm 2 was actually the first graphic game I played so it holds a lot of sentimental value to me, saying that I have to place it just a little above the third one which was also excellent especially Armageddon's blade. Sigh... the good old days with no third dimension.
If you're buying then I'd recommend to start from the second and after that to the third because starting right from the third can be overwhelming. You can also try the first one too, I think it's abandonware or freeware.
If you like strategy and rpg then heroes of might and magic is just for you.
