 I was looking to buy another Sierra until I sat in a Titan at the Auto Show.  This truck has the most comfortable seating of any vehicle I have ever sat in as well as a ton of leg room (important for me as I have long legs).  I tow an 18' fiberglass boat that is kind of heavy and this truck pulls it very well.  The nav system is excellent and a nice option to have.  It was hard to find one with side air bags as the package for air bags includes an electronic stability system - both of which I feel should be standard on all vehicles.  Gauges are well designed and easy to read.  The transmission temp gauge is nice to have if you are towing anything.