They are uncomfortable for flights over an hour. I usually like the window seat but find it too confining on this aircraft, especially if someone tall is in the aisle seat. I was on one with NW about a month ago and a guy probably 6'5" was sitting next to me. The FA yelled at him twice for have his legs in the aisle. To keep them out of the aisle, he could not keep the tray more than halfway down (he was watching a DVD). As soon as I got to a computer I switched my seat to an aisle for the way home. It wasn't much better and I'm only 5'2".