OSL-CPH return. Ticket would have been quite expensive on this trip but fortunately I had enough bonus points to get a free ticket. Either way SAS` tickets were twice as expensive so no choice really. Used the self check-in machine on both OSL and CPH and had checked in and gone through security in no time. On the flight down to Copenhagen we flew on a new 737-800 which was spotless. Cabin crew was nice and friendly. The flight back was not so positive - a 20 minutes delay. Our plane was an older 737-300 and it showed signs of age. However the seats were new comfortable leather seats - not as clean either. The crew explained that they had chosen to try to have a short turn-around as possible and I guess that makes sense. Crew not as pleasant on this return flight but all in all it was a satisfactory experience and I almost always prefer Norwegian over SAS.