I actually own a 1987 model which is essentially identical to a 90. Despite my vehicle's age, it has pep, gets 18 mpg city, 21 hwy, has a better turning radius and better cargo-holding capability (shape matters more than volume I've found) than similarly sized modern SUVs. I would not hesitate to recommend a Cherokee or Wagoneer of this vintage that is in decent shape to anybody.
Fold flat rear seats are very convenient, as well as the 4 headlight setup, which allows the high beams to be adjusted separately from the low beams for a better pattern.
On the headlight note, however, I would also highly recommend replacing the weak sealed halogen lamps with aftermarket DOT approved lamps which take modern bulbs and are FAR superior. Don't forget the Jeep wave if you get one after reading this!