 We have the Prius 3 package which has navigation and keyless opening of the two front doors and the hatchback.  The smartkey system is wonderful as the key fob stays in your pocket yet you can open the doors and start the car.  We also have this on our 2008 Prius which is also a fine car.  Haven't had any issues with the nav and we've used it in most of the western states.  This generation of the prius is quieter and rides more smoothly than the previous two.  It gets about 10% better gas mileage than our 2008 without babying it.  On the highway my 2008 gets about 44-45 mpg while the 2014 gets at least 50 mpg.  Luggage capacity is not an issue for our family as it fits many suitcases.  This car has only 16k miles but I expect it will hold up as well as the 2008.  No problems with the car.  It did come with cheap Bridgestone tires which were garbage and were replaced at 10k miles by Michelin Premiers which are outstanding for snow and handling.  My wife drives like a formula one driver yet gets about 46 mpg in the city.  Wish we would have gone for the softex interior as the cloth is easily dirtied.  Headlights are excellent and improved over the prior generation.   Climate control is typical Toyota: excellent.  Visibility once you get used to the rear window is excellent as well.   If you aren't intimidated by it, the car is easy to work on and super cheap to maintain.  It is a nice feeling to have cars that are reliable and safe.  Definitely recommend this car.