Where you wanna go and for what? If you wanna go to Sao Paulo just for a trip.... take that fly, most of the 767 now have the same seats as the 787-8.

If you wanna fly for points or do a mile run the BCN LIM then the fly is operated by Latam, that have a better service.... but to get from Lim to Gru is another 5 hours fly.

If you wanna fly a nice plane, fly the A350 from Mad to Gru, Tam service is not as good as Lan but the seats have more leg room and the Screen is bigger. (Compared with the 787-9.... if find better the seat of the 800 also, the 900 on bed mode my feet will hit the other seat 6ft toll)

A321 PE is just like a economy seat with more leg room and best food.

777 is old but the seat is great.... is not a 180 ° flat bed but must be about 170°...... if i have to choose a 777 vs the 787 9 i will take the 777 seat