It appears that 64 A&B or J&K are the popular seats. Which side is better, and why? (I'm curious because SeatGuru doesn't favor 64K, but it seems to be a favorite in this thread.).
Unless you are the worlds most fussy person there is next to no difference. Both are very private. Perhaps 64k just a little more so but it really is a toss up.
I prefer 62ak just because of the unlimited leg room but those seats are not available to you.
FWIW I would not pay for the upper deck. 14am or 20ak are nearly the exact same as 64ak.