Also consider that the X has a larger space behind the 2nd row than the Y so it splits the difference there and the 3rd row (if it has one) folds with a button from the rear so it is no less convenient.
1 row X > 1 row Y > 2 row X > 2 row Y
So how close a gap from "2 row X" to "1 row Y" and how often do your hauling needs feel that difference is the big question?