You want width more than space between seats. Several seats are open in the regular or extra legroom sections and you care more about seat width than space between seats. One drawback of exit-row seats is that the armrests are fixed, so you can't lift them for extra space, even if the row isn't complete.

While exit row seats are highly coveted for their extra legroom, they come with several significant disadvantages that travelers should consider before booking. First and foremost is the "Exit Row Responsibility": by sitting there, you are legally agreeing to assist the crew in an emergency, which includes being physically capable of lifting a heavy door and directing panicked passengers. Second, many exit row seats have limited or no recline, as a reclining seat could potentially obstruct the path to the emergency exit behind it. Third, you will have zero under-seat storage during takeoff and landing; because the floor must be kept clear of obstacles, every single item—including small purses or laptops—must be placed in the overhead bins. Fourth, these seats often feel colder and draftier because of their proximity to the door seals. Fifth, the seats are often narrower than standard seats because the tray table and entertainment screen are usually stowed inside the armrest rather than on the seatback in front of you, making the armrests immovable. Finally, many airlines now charge a premium fee for these seats, so you may find yourself paying extra for a seat that is technically "less comfortable" in every way except for the distance between your knees and the wall.