Compared with the SAS' A321LR business-class experience from Copenhagen to D.C., the inflight experience felt more comfortable, spacious and premium thanks to the more advanced seats and the level ...
SAS also uses an A321LR with business class but only for intercontinental routes to North America (Toronto and New York). So, it is not included in this list.
Icelandair CEO Bogi Nils Bogason told Business Insider that the A321LR is the "best replacement" for the inefficient 757s as it is 30% more fuel efficient per seat with a similar capacity.