Short Version:

I am flying LHR to HKG in economy on a 777-300ER (77H), which is the best seat to choose?

Long Version:

Same as above. I have chosen 40C as SeatGuru says thats the best one, with no one sitting in front of you. However, on the seat map on CX it shows that 40B is the seat with no one in front. Which is correct?





Is this really the best seat in economy?
Does it still have USB ports and a power port? Are these on the screen arm, or on the seat somehow?
I think I would miss being able to put bits and pieces in the storage under the screen in front, but then perhaps the extra leg room would be much better

Perhaps 59C or H is better?

Any advice? Thanks in advance