Flew on one yesterday on DL from MLB-ATL, I have to say for its age the plane isn't that bad its just i would rather want to fly on a 737NG or any plane in the A230 Family.
p.s. I like old planes a lot it's just that when you fly on them it's a different story then when you see them around. Also, I have family that works for AA so i Non-Rev on them a lot, to this day i still can't beat flying on the first of the day JFK-MIA flight which is a 757-200 and that is my favorite plane in the world.