We did the Nautica two years ago Istanbul to Athens and last year the Regatta for a two week Baltic Cruise and had a great time. I am pretty sure I did a review here. The short version is that is's a wonderful value with good service (even some former Regent staff onboard). I would not book below Concierge because of the amenities like a refridgerator and luxury linens and beds. The bathrooms are small and simple but are acceptable. Food is very good expecially in the alternative steak house and the Italian. We think that Oceania - if you can put a number value on experience is about 90% of Regent and definitely more similar to the PG experience.