If you're tall and desire some more legroom, seat 67A or 67K will be slightly more desirable. You still have gobs of elbow room on your left or right, but is closer to the window for an easier view outside. Best of all, you can really stretch your legs using that huge empty space between the sidewall and the window seat of row 66 right in front of you (look at the seat map above and try visualizing). Whereas in seat 66A, your legs are limited to whatever space is available under the seats of row 65.
I flew LAX-HKG on a CX744 in August, seated in 67A. The opportunity to really stretch my legs while seated made a big difference. Managed to sleep for a continuous 6 hours over the Pacific, a personal record!!