To South America:
Delta - Pro: planes are nice,
Con: seats don't recline, hate they're service in JFK and in flight service isn't amazing.
TAM - overall a good airline, seats recline nicely.
LAN - Pro: very nice planes, seats recline, good in flight service, comparable to European airlines.
Con: A bit square, on the phone customer service doesn't exist.
AA - over all good, service is different every time, amazing to redeem miles.
Con: many times not nice planes, it's a American airline so no alcohol.