I think I have found my favorite hand to be KK.
I like it even more than AA for the following reason.
When you have AA, the chance that your opponent holds an A becomes much smaller. When an opponent does not have an A, the chance to get more money in the pot drops considerably.
When you have KK, the chance that an opponent has an A increases, so more chance to play a decent pot.
The chance that an A comes is relatively small, so no big danger to lose the pot to that, and when an A does come, we can fairly easily get away from our hand.
So, conclusion, kings rule