LR4 is MUCH nicer inside than the LR3, Nav system works much better, new engine is a big improvement over the previous one, and every bit as capable esp. with the heavy duty package. Traction control/abs/HDC is quieter. I take one out to the woods once or twice a month (40 psi in stock street tires) and am continually amazed at what it can do despite the traction handicap.