In F, 2A has been my go-to seat then 2D. I usually avoid F bulkheads due to leg room. However, now that I see this thread, I wonder about 1A or 1D since it says 40in.

In Y, I've always chosen 7A but I see many people comment about 7CD. Is there a difference between 7A and 7D? Other than 7B stealing your underseat storage space?