I bought my car used off autotrader a year ago and I couldn't be happier. I've always thought these cars were beautiful.

Pros:
* Despite being well over 100,000km it still runs like a dream.
* Accelerating is the best part of my day
* The design has aged so well. My car is now 10 years old but still looks amazing.

Cons:
* Takes premium fuel, making long road trips annoying
* Rear-seat space is just ok for a coupe, trunk is on the small side as well (supposedly fits two golf bags)
* One common problem in these cars is that the window motor's fail. Mine is currently broken. A minor inconvenience, probably a $300 fix if you order the parts online and get a local mechanic to do it.

Competitors in this price range (that I seriously looked at):
Audi TT
Mazda RX-8
Nissan 350Z
Acura RSX
BMW 3-series coupe

My mother ended up buying an Audi TT and I drive it whenever I get a chance. I love the styling, but it lacks the power (hers has the 1.8T I-5) and comfort of the Infiniti. The Nissan is essentially the same car as my Infiniti but I prefer the design and overall execution of this car better. I test drove the Mazda and would avoid it's rotary engine and finicky transmission at all costs. I can't speak of the last two because I couldn't find one in my price range that seemed worth it given their age or condition.