Nice product as far as regional goes, specially that loner middle seat.
I would have tried it more often, but NH's been quite pricey the past few months and it's difficult to book directly with them for intera-asia flights with US/Canadian cards.
Maybe next January, in the low season I can book an AC codeshare. For now, I'll stick to Y in SQ11, which by the way is a fantastic product and a fantastic plane.