I still prefer the old school, where turning undead meant just that. They ran away from you. I am not a huge fan of the damaging fireball effect.
I think I'd rather they just made a mechanic for turn undead, and have it work that way for everything, UNLESS otherwise noted. I sure as heck don't want a bunch of room taken up by more situational monster things, especially if it takes away from the fluff of the monster.
The biggest issue with the old turn system was that it makes clerics too much of a requirement if there are undead around and it makes the GM have to upsize his encounters if there is a cleric in the party. There should never be a time when there is a huge difference power between having a cleric in the party instead of another Healer type. Sure a cleric should be good against undead. But they should never have an "I win" button.