Shaman Karrakh quest chain..?! (Spoilers)

[Madstrike]

I know you reckon I should try ancient vampires, but is there a reason to use those over regular vampires? I mean the ldr per damage is better on the lower ranked vampires, only advantage in bat mode in favor of ancient is that it has slightly better speed and init(and attack). Also using them should I use them always in bat mode, or sometimes in vampire mode, then switch to bat after the battle is almost finished to resurrect some troops?

So what did u use in the end in that Haas battle, I know you were positive on LF, sprites, skellie archers, and demons, but were uncertain on the fifth unit. I could maybe think of a few of possibilities: knights(loads of dragons), ancient vampires, royal snakes, inquisitors, archidemons.