I fly the 777 2-4 times a month, but have never set there. I always see people gathering in front of these seats which would bother the heck out of me, but thats just me. I also dont care for the arm tray tables. I usually opt for an A or D. A because I can lean against the window to sleep (you gotta know how to pick the window vs/window frame though...) or a D as it has an inch of extra room and doesnt have the power unit under the seat in front of you.

FWIW, I am 6-1 and about 285.