The levels are about 1.5mil exp and each one is about 100k on top of the previous. The game's quality is absolutely amazing. I'm loving the quests and the general feel of Northrend. I also quite enjoy what they have done with the lore, this new phasing tech is really awesome. It kinda feels like you are actually changing the world.

Edit: I just logged in to find a mail from an NPC thanking me about telling him about his daughter's demise (which is a nice little story so I won't ruin it). I'm loving this so far. I hear the raids at 80 will also be quick and fast and I'm really looking forward to that as well. WoW is still an absolutely amazing RPG in of itself.

I'll admit the game is good, but not good enough to warrant the amount of time my friends want me to put into it. Therefore, I do not play it at all.