Well! Seems as they nerfed all the monsters in all our instances because of WOTLK they're now much much much easier to beat. Soion i would say 1600 around abouts. If anything it's stayed the same or got lower. But it can't of got higher as the monsters are now easier. I can see sence in them keeping it the same as a 'Healing procaution' But it is definatly not higher.
We'll be doing Karazan raids for fun this week. Don't see the certain NEED to items seems as they won't be Epic in WOTLK.