I own a Track, but for the best value, I'd go for the Enthusiast. Unless you live somewhere that it snows and you plan to drive your 350Z in it, you will never use the VDC. I always turn mine off every time I start the engine, unless it is raining. If you are going to mod the car, get different wheels, etc., why pay the premium for a Track which has nice but very expensive Rays wheels that are not as wide as you would probably want to go with aftermarket wheels. The Brembo brakes on the Track are great, but you can get aftermarket brakes.
I might go for the Performance becuase I love the in-dash tire pressure monitors, if the price is not too much more than an Enthusiast. Touring is a luxury model, I would stay away from it. Base does not have the LSD, so get an Enthusiast or a Performance.