As for the 742, DC-9, and NW A333 I am too young to have ever flown any of those products. I'll leave others to judge the merits of their seats.
Then are you old enough to even post on FT? The 747-200 I understand. However the DC9 was around till just a few years ago (less then five) and the oldest A330 is around 12-13 years old.