LA F class is from very good to excellent. Seats are good to very good (763 v 340) and I've never had a bad segment. My worst F segment was 'acceptable' and my best have been among the best anywhere. IFE is ok. One of the best qualities is one of the worst - the cabin only has 1 row of 5 seats. Often there is only 1 A seat for sale. However, if you score one of them, it is a very private and fairly spacious cabin, given that there are only max 5 pax, 2 FAs, and 1 row. I'd be tempted to fly them MAD/SCL or AKL/SCL if I had the opportunity. (There is generally no 3 cabin service within South America unless the plane is making a stop to/from elsewhere - however, a shorter flight in J on their 2 cabin service is perfectly good.)