I've had some great AC gate agents who've upgraded me as a *G courtesy and AC's up front experience is head and shoulders above US (or UA for that matter) - the AVOD is great and even or relatively short flights they serve pretty decent food (and I still remember AC of the 90's - the food they served then makes current US food look like 5 star gourmet fare....)

On a recent flight from ORD to YYZ they served huge fresh muffins from a basket that were really good.