IC. Just some food for thought. you say you get used to speed/power, so you might as well just switch to a car that you like more overall. But just like you get used to speed and power you also get used to any other aspect of a car. The things that excited you about the z06, now don't really do it for you anymore, and the things that excite you about the 370z and make you want to switch, will eventually do the same.
Once you come to the realization that you will eventually grow tired of what excites you about any car, you might as well just stick with what you have... especially if its a z06... thats a pretty awesome car.
just my
