We've been on the Crown, Dawn, Grand, Sky, and Sun. Contrary to Kuki we like the Grand Princess the most. Although the ship was almost fully booked for its inaugural transatlantic, we found it to be more intimate then the other smaller ships in the fleet. And we NEVER experienced lines anywhere on board, or for embarkation or debarkation in ports, which is something we CANNOT say for the other ships. The food & service were outstanding, and the amenities on board varied and comprehensive.
Lastly, we were upgraded to a Vista Suite which helped make that one of our most enjoyable cruises ever; so much so that we will be on the Grand again next year (this time in an Owner's Suite).