Well... My favorite army usually varies - it depends on the game I'm playing and what kind of items I can find.
In my last game - playing a mage that uses mainly her spellbook, favorite army up until lvl 43 or so (around 43-45 I beat up the dragon lair in Montero) was 1 Black Dragon spawned from an egg (only), backed up by some Black Knights who saw first blood in the siege of Demenion's castle around lvl 46...
But in general, there goes:
Warrior/Paladin
-Paladins
-Knights
-Archmagi
-Demonologists
-Horsemen
Human units are very easy to play with and easily get morale bonuses due to the multitute of items that grant them.
Mage
- something small with a lot of HP so that it can survive or a stack of Black Knights with Splinter of Darkness. If I can get a Call Collosus spell at first, it's perfect. Actually, I should have saved my current game at start and go for the big result, but I was stupid... Got Call Collosus in the training fights. Silly me.
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