Car and Evo from the UK are my too favorites...they're well written, and they focus heavily on performance.

 

Starting with the best:

1.) Car & Driver
2.) Motor Trend
3.) Sport Compact Car
4.) Import Tuner

 

Road&Track my favorite for the money.

First to cover the final version of the 350Z Dec 2001, made the cover test drove in Japan. Current issue has short article on the new Z33GT racer (Nissan factory Z racecar) and the G35coupe.
Plus lots of great racing heritage articles.

 

The only thing I get out of these mags is the pictures. They only exist to sell cars, not to critique them. Consumer Reports is the only one I'd trust, because they're the only one I've see with negative reviews. USUALLY, in the major car mags, the size and nature of the review is proportional to how much a company spends to promote it.