I choose this flight because is the most long trip of Iberia. The flight was great and i still think the Iberia Pilots are the betters landing, if you are not wake up you can continue sleeping, you will never feel it.
The service was ok, nothing for remember too much time. The J class was pretty full and this in the 2A seat was the last Iberia`s President with him wife, i think. So the crew was pretty kind in this section.
I still choice Iberia for transatlantic flight because for me the seat have to be lie flat and Air France and KLM doesn't have and British have this poor Business Class seats. so the other option can be Lan or Tam but the lay out is 2-2-2 or 2-3-2. So with Iberia, if you choose the windows seats you fly alone and can sleep with nobody walking near at you.