There was almost a $1000 difference in price between the NS-1000M with its smaller, flat black cabinet and the larger ebony NS-1000 cabinet. I do prefer the ebony finish. But, mostly I prefer the sound of the NS-1000. It is definitely much smoother from top to bottom and simply a more relaxed speaker to listen to for my ears. And, I listen to mine backwards.

Have the drivers to the outside on both speakers. They image better in my listening space like that.