I haven't flown AC B789 for a while since I've been avoiding AC for int'l trips. I have an ICN-YYZ leg (Y fare) later this year and I've been debating if I should get the free bulkhead (18A, C, or D) or just stick to regular middle aisle. I am 5'11 but have relatively long legs. For me, the most important thing is that I can stretch my legs and keep them fully straight. I don't care much for "knee" rooms.
I've checked seatguru and googled a bunch of youtube videos. It seems the bulkhead position is fairly close to the seat. 18C seems to have most leg room since the PE seat only covers the front partially - but I can see why people complain about the service cart bumping into the seat. How about 18A and D?
Appreciate your insight.