I also got Twilight Sparkle. I can't decide if I'm disappointed or not. On the one hoof, that pretty much resigns me to the "generic reclusive nerd" side of the pool, but on the other hoof, this technically means that Lyra is stalking me as I stalk her stalking me, so that's pretty neat. *nods*
In tests where it's an option I seem to trend more toward Celestia. Is the internet trying to tell me something?