I owned a 2001 BMW 330i before this vehicle and it was as beautiful as it was fun to drive, but the cost to repair was obscene.
I purchased the 2006 G35x four years ago - used with 30k miles. It now has 142k miles and I have spent $0 on repair bills.
It still runs, drives and looks practically new.
I do not baby the car, I drive it hard, in fact I beat on it regularly - I commute the DC beltway and its easy to get carried away.
It's fast and handles great.
A few other reviewers have noted that it is not a luxury car.
I would say that it is.
Maybe not as luxurious as BMW or Mercedes but pretty close and much less cost up front and along the way.
Unless you need the ego stroke...