My vote is also to go to LAX.
I've tried both - yes, A359 w/ zodiac seats is nicer but QR B77L isn't bad at all. It's proper business class (unlike J on QR A332 planes) w/ flat bed and if you pick middle row (E or F) you have aisle access and don't have to worry about your neighbor having to do the hippo move (or antelope or giraffe or whatever animal people are using as illustration ...).
Food wise LAX should be the same, if not better, than BOS. Btw, does anyone know what is QR's plan for food on LAX route? Considering it is longer, QR will probably add extra snack choices on the menu?
Flying A359 only to continue w/ WN for the next 5 hours is just ... ugh. It should make a good joke in the office though.