If you want a REAL vacation it would be on the Crystal. I have been on both the Crystal Symphony and the Crystal Serenity. My last cruise was on the Serenity and it sure sticks to its name. My vacation WAS really serene! Every staff member is so very well trained in how to deal with the passengers that you feel like you have died and gone to heaven.
The food is 1st class and very elegantly presented. The embarkation process is very easy and no lining up. The cabin was spotlessly clean and maintained at that level the whole time we were on the ship. The most impressive part is when you leave your cabin to go home the housekeeping staff comes in and removes EVERYTHING to get it washed. This includes the curtains, duvets, all the covers including the throw pillow covers. Wish other cruise lines would do that. I cruise about 6 or 7 times a year on different cruise lines and have only seen this kind of cleanliness on Crystal.
Entertainment - 1st class. Disembarkation -very well organized so there are no lines when going through customs.