This was supposed to be an A330-300, however, the configuration was different than the seat choice map. This seems to be pretty common for Air Canada. The last time I flew this route it was in premium economy, however the premium economy had 4 seats in the middle and the “extra” legroom was not any better or worth the money over regular coach, so thought I would try bulkhead, row 18. I am not sure it was worth the seat cost. The person next to me asked to be moved even though he paid extra for the seat because he had a broken foot and it was more uncomfortable than regular economy where you can put your feet under the seat in front of you. This row perhaps had a bit more space from the back of the seat to the bulkhead, however the extra space for knees does not help your feet, and all bags need to go overhead. Having the seat next to me empty meant I could fold my legs over the tray table armrest that was not movable and stretch out a bit to sleep.