Yes, I would buy the Z again, in fact the same model trim & color again. When looking I really liked the style of the 370z & once I got inside I fell in love with the cockpit & the rawness (some say it's noisy) of the car. While not the fastest or most powerful car, I was looking for a car that I liked the styling, feel & handling. I spend 90% of my miles in the canyons as the Z is not my daily driver.
If you are looking for straight-line speed & power, or cargo capacity (more than 2 people & 1 large suitcase) you might be a little disappointed, but if it's style & feel your looking for, the 370z should keep you smiling for a long time.
YMMV