The EK 10-abreast 777 (3-4-3) is as dreadful as it sounds. It's only partially made up for by the extra pitch.
However, I deliberately arranged 3 out of 4 sectors of my EK trip to be on 330s. They were conventional 8-abreast (2-4-2), or at least were then (about 3½ years ago). Has this now changed?