I'm underwhelmed by iPad 3, so am going to skip it.
I have 1 and 2 and like the convenience of swapping my unlimited 3G SIM back and forth when I need to grab whichever is fully charged before I head out the door. I like iPad 3's better screen, but that's the only real draw for me, and that's not enough to make it worthwhile for now.
I was ready to buy if tempted, but meh. I have an unused gift card that I probably won't be using for another year. (Unless Apple comes up with a 7" or 8" iPad, lol.)