They each have their own personalities and obviously their fans, and we certainly have our favorites. However, each does the job to
DCL's standards. It is sort of like caring who the captain is--again, we have our favorites, but each is fully able to steer the ship and manage the operation safely.
How much interaction you have with the CD is in part luck and in part up to you. Luck is the "are you around when they are around" or do you happen to run into them in the hall kind of thing. The "up to you" is whether you choose to speak to them at the officer evenings, etc.
Christiaan's back flips are amazing. Peter has the personality of a wet noodle, but he honestly has improved in the last year or so. He's more into being himself and less into trying to imitate Christiaan (which he can't pull off!)
Christiaan was on the Fantasy? We have missed him since he's been "Wondering" on the west coast.