I have one of the very first ones made (JX35) and have 30,000 miles on it. Its been across the country and down the windy Oregon and California coasts. I love this vehicle. I researched the car way before it came out, and test drove one of the first when they came in. It is a great value for the money. The ride is vey comfortable and handling in my opinion is very good for a large vehicle. It is not intended to be a sports car, but more of a family or touring car. I have not had any issues with my car, with the exception of the recalls that you may have read about. Nothing serious. I like how smooth the transmission is, and love the ability to manually shift it. I do have the longest extended warranty available and if its like my 8 previous Nissan products, I don't expect to use the warranty, but its there if I need it.
The gas milage is pretty decent for a large car. I get about 19 mpg mixed driving, and close to 25 mpg on long trips. I do have a Yakima cargo box for those trips, and it doesn't seem to affect the gas milage with the exception of being in gale force winds.
The only thing we don't use much is the entertainment DVD system. The safety features such as lane departure intervention, automatic braking, back up collision intervention, adaptive cruise control, etc. work very well and are worth the money.
I know there have been issues with the CVT on QX60 and Nissan Pathfinder, but Nissan/Infiniti have been working with their vendor to fix the "shutter" issue.
We have two Infiniti sales people on this forum that I'm aware of and they are very well versed in this vehicle. If I were to purchase an another Infiniti today, I'd trust both guys and would go out of my way to do business with them and their dealerships. They are very reputable dealerships. If you have questions, don't hesitate to put them up on the forum. You will get answers. Please do compare the competitor vehicles. I bet you will find Infiniti is offering more for your money.