This was our 47th cruise. Only the second on HAL. No reason for not using them more other than price/destination offered by other lines seemed to fit our plans better. We've been on NCL 22 times. We really like Celebrity and Princess.
Now, about Nieuw.
The Good ... was the price and the extras provided by CruCon. $1600 per person with $525. in onboard credit + free drink package for two + dinner for two at their specialty restaurant. If you like to walk, it's one of the few ships that actually has a deck that goes right around the ship - 3 laps = 1 mile. Our balcony cabin #4006 was well appointed and very quite - I guess it's been well soundproofed.
well appointed. comfortable bed.