Originally Posted by
tostaky
Thanks for that answer. it will be my wife and me. We are small ( 5 foot 5 and 5 foot 7) and not large. Some planes with Transat also have 2 by 2 seats at the back.
Ah, so you are the mythical people that modern Y seats are designed for.

They are certainly not designed for me.
Sounds like you'll be comfy enough in any of the seats, especially if you don't have to snuggle with strangers. If price is about equal, just choose whichever is most convenient.
Also, if price is the determining factor, make sure that you are comparing apples to apples. Be sure to include any costs for seat selection and checked baggage when doing your comparison.