My Quest has had some problems since I bought it. I have had to replace the flex pipe as it was rusted for $360 at Speedy Muffler. This quieted the exhaust substantially. The transmission used to bump abruptly into second gear but since I changed the tranny fluid and filter the smoothness has improved substantially. Air bag light came on one day but local Nissan dealer cleared the codes for free. They said it may have been caused by a low battery. These are great guys at Doner Nissan in Newmarket,Ontario.
Power accessories. Kids like rear radio controls. Both rows of seats fold down quickly with little hassle.
The newer models added a forth door which is desirable.