Row 21 center section has a TON of leg room. I have seen children seated in this row as this center section is not right next to the exit doors. The bad part of this row is the constant traffic that crosses over from one side of the plane to the other side. After the first two times, I just started picking the AB/KL sections. Row 22 does NOT have any additional legroom in spite of being branded as an exit row. Learned that the hard way too.