I'm flying DL200 (ATL-JNB) -- 15+ hours (17 hours back!) -- in a few weeks on the 777. Currently, there is only one EC+ seat available, and it's a middle seat. I have been religiously checking for EC+ seats to open up, but to no avail.
I am currently in 34A, which is a window seat, and 34 B is currently unassigned. I would be interested in opinions on increased legroom, etc. in EC+ middle seat vs. regular economy window seat with possible empty seat adjacent?