I've only had my Quest for less than 1 month and I do not love it. For the money, you get a lot and not having to remove the rear seats are a big plus but the driver seat doesn't provide enough support and I slide around when turning. The lumbar support is extremely uncomfortable. There are lots of rattles in the car which Nissan tried to fix but couldn't. I love the looks and the drive but that's about it.
My favorite feature would have to be the second row folding down into the floor.
There is alot Nissan can do to improve this car. First, provide adequate support in the seats, make the third row a split bench and add roll down windows for the second row passengers.