Please be aware that Hurtigruten is not a cruise line but a (traditional) ferry service along the Norwegian coast. It is a very nice but different experience and also a different itinerary (!) than a conventional cruise to Norway.
Here a link to some (old) video clips of a Hurtiguten trip:
Personally, I recommend a conventional cruise with a good itinerary during the summer months (when the Hurtigruten ships are crowded) and a Hurtigruten trip during the off season or even winter months. (However, I heard that they can be full even during the winter!)