Just got back from doing one of these - YVR-LAX-PEK RT.
788 is OK in J, I much prefer the RH layout on the 77W and 789. Crew on my return yesturday was pretty terrible, has to ask multiple times for refills and got snapped at for using the restroom when the seatbelt sign was off. On the upside, got into LAX a hour early witch of cource meant the wonderful bus gates. Overall good price for J on the route, I credited to AS on the way out to make MVP75K for next year, and the return to AA to finish up EXP.