What would be the best flight for round trip from JFK to PEK?

Hello everyone. I am currently staying in the U.S., and I plan to return to China for a visit at beginning of August, return at the end of the month.

I would like to hear some suggestions of which airlines would be the most suitable options? Currently I'm looking at Asiana Airline, Korean Air or JAL. I had experience with Korean Air before, honestly it wasn't a very ideal trip, outlet was underpowered, and the seat was not comfortable. I also heard that Asiana Airline is simliar. Now I prefer JAL better since I found they provide outlet and Wi-Fi, larger leg room, but I want to know if they really worth 2000 dollars round trip. There is also a second choice provide by JAL is choosing American Airline as connecting flight to JFK, will save me around 200 dollars, is this a good option?

Are there any other airlines that frequently fly this pacific route that anyone would particularly recommend?