Eric,
I just got back from 14 days on the Regatta in Northern Europe/Baltics. I have been so busy at work I haven't had an opportunity to post but hope to post a comprehensive report by the end of the week.

I boarded early so I could preview all categories of staterooms and took quite a few notes. I am a RSSC loyalist, but must say I truly enjoyed Oceania.

In my opinion, concierge level is a must (even though I wasn't traveling at that level). The staterooms are definitely smaller (more like the Paul Gauguin) as well as the bathrooms only have a shower until you get to the Penthouse level.

If you want a comparable Radisson experience, you need to go to the Penthouse category. If the room and bathroom are not as important, than the standard stateroom is fine.

I thought the food was better than most cruise ships I have been on.

If you have any particular questions, please feel free to ask.