Qantas plane is good, ground staff hopeless
Pros: We have travelled a few times by Qantas because we come from Australia. Their planes are safe.
Our plane got delayed ( and this is not the first time we have had this with Qantas), and then we missed our connecting flight. The ground staff were not helpful at all. Our connecting flight was with LAn airlines and LAN were very cooperative and gave us another later flight though they were not obligated to do so. Qantas are generally too much by the book and things always go wrong.
I still use them but it is a risk that I need to consider more next time. LAN/Latam helped us out because they are more customer oriented.
Anyway, good luck
Cons: Qantas are too stingy and not customer focussed. We missed our flight due to their plane late by 6 hours and they did not offer assistance even though we missed our connecting flight. The other carrier helped us out, phew!