If you have cruised, you'd probably be surprised to learn which cruise lines have risen to near the top in a wide variety of ship sizes.  It was seven years ago when I was on a  Tauck European River Cruise , which was then rated #1.  In fifth place was Viking.  I'll later let you know where they now rank in this category.  The other surprise is Norwegian Cruise Line, for they ply the islands of Hawaii, and are okay...but really good?  We'll see. So, anyway, here is how  Condé Nast Traveler  readers ranked cruise lines: Mega Ships ( more than 4000 passengers ). #3 is Norwegian Cruise Line. Their first was the Norwegian Epic in 2010, which could carry just over 5000 passengers. They now have five others.  For those seeking a more mature environment, sail on the Norwegian Bliss ( right ).  Generally sails out of Seattle, Los Angeles and sometimes Miami.   Cheapest cabin listed from $60-$120/day, although I noticed that there is a 15-day cruise from Miami to Los Angeles, depart