GOL (G3, not G9) is an excellent airline but for some reason they still don't serve IGU
I'd recommend TAM, for they are generally slightly cheaper than VARIG, and their service is excellent. You will most likely get an A319 or A320 between GRU
(as pointed out, the night flights and "red-eyes" are very cheap because JJ
are trying to compete with G3), and an F100 between GRU
(moves a bit in the notoriously rough weather around IGU
, nothing to worry about!).
Take your pick! One very sincere piece of advice however... AVOID VASP!!! They are a liability. They are
cheaper than JJ
, but they are not cheaper than your life, so really, do what you can to avoid them.
Enjoy your trip!
P.S. If you are coming from western Australia (Perth?), perhaps you could get a better deal using a QF
/LA (oneworld partners) combo for PER