Q400 NextGen
That's all because of Wideroe, they were extremely unhappy to have their precious Dashes taken away, never having had an incident themselves. Their route network, typically the far up north places such as Longyearbyen with short runways and marginal weather, requires exactly such aircraft type and if they were to be forced onto the CRJ, they might just as well have to pack their business altogether.
Still methinks, with fuel prices hiking as they are, SAS are going to lose out on this 'conversion' in the long run.