When we started to cruise on a regular basis, it was on Celebrity, but just once a year. And those included 5 transatlantic cruises, 4 on M class and one on Century.
Also, we had been cruising in a suite, and with the length of the cruises we became Elite.
The next cruise was also a TA, but on Navigator , and RC became my favorite cruise line , just because of the layout of the ship. And since we were Elite, we had Diamond status. I also retired at that time, so were were looking at cruising much more, and also doing B2B cruises, and living in Connecticut at the time, made Bayonne a much more attractive option. There were no X ships sailing from there. Now, we are back living in Florida again, but there are so many more RC ships to book, X dropped off of the list.
I did look at one of the newer X ships with the thought that I might give it a shot, but it did the same itinerary every week, so a B2B was out of the question.