Most of the feedback I got last quarter comparing SK TATL business class to LH TATL business class came back with LH being preferred over SAS.
Of my TATL flights last quarter, the only one with broken IFE was Delta. And they refused to reseat me and passed the buck on that to customer-unfriendly KLM even as it was a DL-operated flight. Worse customer service than from SAS when it comes to broken IFE.