Join Date: Mar 2015
Location: NYC (Primarily EWR)
Programs: UA 1K / *G, ALL Accor Diamond, IHG Platinum Elite, Marriott Bonvoy Gold, Avis PC, Hertz PC
Posts: 10,566
I haven't flown OZ, but based on what I have read of it and my experiences of actually flying the other 2, I would go with AC. Only downside is that AC does not have Wi-Fi installed across their widebody fleet yet, so if that is important, I would stick with UA.