Here is my 2 cents worth. I'm one of the first owners of the JX. I ordered it fully loaded. The only thing we really don't use much is the entertainment DVD system but I'm glad we have it when we take long trips with passengers in the back seat, or when at the cell phone parking lot at the airport waiting for a delayed flight.
I use all the "electronic nannies" all the time and have gotten spoiled by them. Last year on an 8,000 mile cross country trip I found the lane departure warning and intervention system to be a life saver. It helped me keep in my lane during a driving rain storm going through the planes states. When 18 wheelers would pass me at 75 mph, it really helped me maintain my lane. The adaptive cruise control is one of my favorite features. It will spoil you since you don't have to constantly adjust your speed in traffic. It will keep you at a safe distance. I think the rain sensor wipers were better on my 2001 Mercedes ML, but I do appreciate them. The back-up collision intervention is a great feature and has saved me from hitting vehicles or pedestrians.
I am a big fan of the Infiniti Connection and Personal Assistant. I use it frequently. To me its worth continuing the subscription after the free period has expired. Others may not agree. If you travel its worth it.
We do get snow on occasion and have used the snow mode and AWD. I'm satisfied with the AWD, but wouldn't take the car to a place where a serious 4 x 4 would go. Snow mode is a control to keep you from over accelerating when the road conditions are slippery. I like the sport mode and use manual shift frequently on back and windy roads.
Where I'm really spoiled is with the comfort of the ride and all the little extras that you won't see on a loaded Nissan Pathfinder. The fit and finish is very nice. Probably could be better, but its better than I expected. The control layout and steering wheel controls are very well designed and placed so its easy to access them while driving. Some of the less frequently used switches are on the left lower side of the dash and can be a bit more challenging to reach when driving, but certainly not a deal breaker.
The all around view monitoring works well and makes it easy to park in tight places. What I like most is that small things like the top view showing your front wheels turning in real time, and the markers really help you see the exact position when the cameras are active.
My wife complains about the rear seats. I like them, but her issue is when she is sitting in the second row, if the person sitting in the front seat has their seat in the full bottom position, it can be tight for a person with big feet sitting back there. I always have my seat in the full up position, and if someone is sitting behind me, they can stick there feet under the seat, giving them additional room. With small passengers, the seats are great. I'm 6'1" am totally comfortable back there.
If the hybrid was available when the car first came out, I would not purchase it. Smaller engine, and from what I'm reading, they aren't getting that much better fuel economy.
I'm at 28,000 trouble free miles. All recalls have been minor and have been taken care of by Infiniti. My 20" tires are still looking great with lots of tread and I feel the ride is very comfortable. I drove one with 18" wheels and didn't notice a difference. The bigger issue is with 20" wheels, you aren't supposed to put chains on. I finally found a pair that fit, but will only put them on when absolutely necessary. The State Patrol can fine you heavily if you aren't carrying them when chain requirements at the passes are on and you don't have a set with you.
Last but not least, the automatic front braking system is pretty nice in heavy traffic. It works very well and when changing lanes in traffic, it can help prevent you from rear ending the car in front of you when you turn your head to check your blind spot and the guy in front of you stops suddenly. I have to be very careful driving my other vehicles now because I'm very used to it.
My wife usually doesn't drive the JX much claiming, "its not my car", but when given the choice of the 2014 Rogue (very nice car) and the JX, she will go for the JX.
I know there are a few members that have had issues with their cars and aren't happy, but I've found that after owning 9 Nissan products over the years, I've never had an issue, and I've been very pleased with Nissan and Infiniti service centers. You may have to stay on them, but usually, they will take care of you.
We have two real good sales representatives on this forum that I'm aware of. One moderates with me and others chirp in when they see something of interest. I really appreciate their feedback since they work for very reputable dealerships and know their products well. When it comes time for me to replace the JX and I go with an other Infiniti, I'll be looking them up and hope they are still working their dealerships.
Best wishes and good luck. If you have other inquires and haven't seen a current thread, please try to search for it, and if you can't find it here or on the InfinitiJXForum.com, post it and we will get you an answer.