We have gone on four river cruises with Viking, so we knew we'd have a high-calibre experience. However, this was our first ocean cruise. We've avoided ocean cruises because the idea of sailing with thousands of people on a behemoth of a ship held no appeal. But Viking's small ship experience is something completely different. No tendering in from a ship docked in open water, 5 minutes to disembark for even the most popular attractions, and no children. (Sorry, but now that we are empty-nesters, we want adult company when we travel.) The staterooms were excellent and the food exceptional. We paid for a penthouse veranda cabin (which got us free laundry and lots of space) but didn't go so far as to book a cabin with a separate sitting room. That turned out to be a good move: the sitting room cabins were really the same accommodation with a curtain separating the sleeping and sitting areas.
The tours were excellent and varied. Every port included at least one free tour, but we found that the "included panorama tour" was often a bus tour with little chance to really explore - bite the bullet and do one of the special activities in every port. To be honest, we didn't take advantage of the nightly entertainment, preferring to socialize with fellow passengers or hit the hay.
We chose the tour for the itinerary, never having been traveled through Scandinavia. Traveling in September meant we hit rain and cool weather in Finland and Norway, but even then the enrichment activities were well worth the time. Once out of Finland, the sun was with us for the rest of the trip.