 We've had it now for one year and it has lived up to everything we could have hoped for.  It's an incredibly smooth ride with pretty decent pickup especially considering its a 5000 pound beast.  I feel very safe driving and feel as if I'm surrounded by luxury - though there are a few things to be desired.  The nav system, like most factory navs, is mostly accurate but has out of date store/gas registries.  The system takes about 10 seconds to start up which means if i need the cam., I have to wait.  We got the air package and combined without the low gear case it moves effortlessly in 18" of untouched (or compacted) snow.  I recommend at least the tech package - it makes the car feel "cool" 