I think Harald, and once that happens, I will so be out of here. No way I want Mette Minus as a queen, it is bad enough that she's a crown princess.
I've got a personal dislike for king Harald (don't ask what he did THIS time...) so I'm hoping he will be the first one to step down. Sonja seems nice and she's a good, hard-working queen. It will be difficult for the royal family when she's no longer "in charge of the house" taking control of things and keeping an eye on people.
Mette Marit is a lost soul, if not a lost cause entirely. There's going to be drama and nervous breakdowns when she comes face-to-face with her new job. The massive workload of a full-time queen will not suit Mette Marit's delicate sensibilities.