Originally Posted by
zeke320
Don't take the JAL 787 as the J seats are not lie flat and not as comfortable as AA.
No.
As mentioned above, the JL 787s that serve NRT-DFW/JFK/BOS have all aisle access fully flat J seats that are even more comfortable than AA.
JL has an angle-flat 787 subfleet that mostly serve Asian routes as well as NRT-YVR/SAN and KIX-LAX (last I checked).
Even this configuration will be perfectly comfortable for the daytime 6 hr. flight between BKK-NRT.