I have sailed on one Regent cruise, 16 days from Los Angeles to Lima Peru, and I have sailed on three Oceania cruises: Marina, Riviera, and Sirena. Lowest stateroom category on Regent and PH2/Concierge on O.
While Oceania is my favorite cruise line, because its pricing is a la carte, I find that Regent’s pricing is comparable to O, because I like to travel in business class air, which is included in Regent’s fare (some exceptions apply.).
I will admit though, that my one cruise on Regent Mariner was superior to any of my Oceania cruises. I love Oceania, but Regent was just over the top more splendid. But pricing definitely is an issue (for both lines) going forward.
I am starting to consider moving more towards land tours in future. I still have three or four more cruises booked over the next two years, including Regent South America in February.
BTW, I am also a Celebrity refugee. Not going back there. Unimpressed with my one Holland America, and one princess cruise.