I bought my 2006 350Z (base) in August that year and still love every second behind the wheel. Not only is it (very) fun to drive - even around town - but the only time it is ever in the shop is for routine maintenance. Since I live in the mid-Atlantic region, I use it year round, but I did get a set of good winter tires, which are a must if the Z is ever going to see snow. The gas mileage I get driving around town (~19 combined) is decent for the class of car and engine, but nothing spectacular. While the car is comfortable for shorter drives, I start to feel anything over about 4 hours (mainly in my right leg since the base model does not have cruise control).
Automatic climate control, body style, in-door bottle holders
Cruise control on the base model would have been great.