I traded an 03 Dodge 1500 Hemi Ram for the 05 Titan. Although the Dodge has a higher listed horsepower, the Titan's power is much more usable, comes on sooner, and seems effortless by comparison. Fit and finish is also better on the Nissan, as is torque, towing capacity, and gas mileage. In addition, the "tow mode" switch, which raises the shift points, is a teriffic feature and makes towing almost effortless. All in all, I believe it is the best bang for the buck in the full size truck market available today.
Power, power, power. Seamless transmission. Tow Mode switch. Fit and finish. Comfort. Handling. Counter-spring tailgate.
On column shift models, when the stalk is in the drive position, it blocks the view of the fan switch for the heater and air conditioning. Other than that, a truly great truck.