Having owned a 1998 Frontier, words cannot describe what an improvement over the old model the 2005 Frontier is. There is plenty of low end Torque from the V6 engine and it's a pleasure to rev. 5 speed auto transmission is extremely smooth (same is in the Titan I believe) and it helps deliver respectable gas mileage. So far I'm getting about 18 mpg in mixed driving and 21-22 mpg hwy. Handling is also a strong suit. Only complaints I have about the truck is the small nearly vertical rear seats and the General Grabber tires. These tires will break loose in even the slightest rain and just don't belong in a truck with this much power.
V6 engine, 5 speed transmission, side airbags, spray on bedliner, Rockford Fosgate sound system. Tough stance and looks.
Make stability control and the side air bags standard on all models or at least in the V6 models as these are worthy features that can save your life. Make Roof Rack optional on the LE model, get rid of the General Grabber tires and put in some Pirelli Scorpions or Bridgestone tires.