When i took the paper version, a person in the room accidentally filled in the wrong section. It was one of the last sections too so he had a real hard time getting a new one and filling in all the old bubbles.
Personally, i liked taking the paper version (havent taken computer version, but im sure FAA computer exams are very similar). I liked being able to visuliaze how many questions i had left and it was easy to fill them in at the last second. It was also easier comparing other questions (like the spatial section) with others to help find the correct answer.
Also, here at ERAU, we are not allowed to take the paper version anymore. We have to take it on the computer.