Originally Posted by aaac

I am only familar with the pacific routes and hence Asian airlines but if you want to have some fun. This may be an option

YYZ(AC)-SFO(SQ)-ICN(OZ)-HAN(VN)-HKG(ANA)-NRT(ANA)-SFO(AC)-YYZ

or

YYZ(AC)-SFO(SQ)-ICN(OZ)-HAN(VN)-HKG(AC)-YYZ


Here are the little experience that I have so far (not in order of preferences)

Service:
SQ - Efficient and professional.
ANA - Quiet attentive service.
OZ - Friendly and a good mix between the reserved service of ANA and the friendliness of SQ.
AC - Professional, does not bend over like the Asian carriers.

Seat:
SQ - The roomiest seat due to 2-2-2 configuration and the drop armrest in lie-flat mode
OZ - Not fully flat but comfortable enough and quite roomy 2-2-2 configuration on a 330
ANA - Confortable, the pitch is a bit tighter than SQ using 2-3-2 configuration.
AC - Comfortable on the 345. Somehow, this seat is more comfortable for me not in full flat position.

Entertainment:
SQ - KrisWorld beats them all.
ANA - Limited number of movies.
OZ - Huge 14" screen, limited movies
AC - Limited number of movies.

Food:
SQ - Book the Cook, best apertizer
ANA - Best soup in the air (Tempura Udon soup in real china)
OZ - The kimbibap is quite good.
AC - Food is geared more to Western taste.

Amenities:
AC - Good pouch with lotion, eye shade, lip balm, socks, toothbrush, ear plugs.
SQ - slippers, eye shades (lotions, toothbrush and other items in the lav)
OZ - slippers, eye shades, ear plugs (lotions, toothbrush and other items in the lav)
ANA - slippers, eye shades, ear plugs (lotions, toothbrush and other items in the lav)