Princess - More subdued. Good cruise line to take multi generations on but still have plenty to do. Love the coffee bar.
NCL - Not my favorite for food but does a really good job on nightly shows and entertainment.
Celebrity - On a par with Princess but would need to do another to form a better opinion.
Azamara - The most upscale. Staff was not as friendly but the surroundings were a joy.
And now I found a website for tracking the cruise ship current position
and short reviews (in most about the entertainment) through which I can very easy plan my best cruise ship and most convenient time for a next cruise voyage.