I have had my Pathfinder almost 3 years and I love it. I live down curvy roads and it handles them beautifully at 55. The only problem I have had is the brakes and that's partly my fault because I am harder on them than most people. It is a quiet and smooth ride. I got it at 94000 miles and had a few regular maintance things fixed but other than that its been great. I do have a little oil and antifreeze leak, but the vehicle does have over 140,000 miles on it! So if you are looking into the Pathfinder I would definitely suggest it - it's very easy and fun to drive:)
The sunroof is definitely a must, the Bose sound system is nice and the room is definitely nice. The room and handling is why I chose the Pathfinder over a 4Runner.
Better gas mileage would be nice but you know going into getting an suv that its not going to be great. I avg 16 mpg and thats highway and country/city roads.