 I've had my Mazda6 for a week and I absolutely LOVE it!  It handles well, it's quiet and my blended gas mileage for the first tank was 26 mpg.  The heater works great, too!!  I had an Acura Integra, but had to "grow up" a little bit.  The Mazda6 was the right choice for me because I now have an automatic instead of a stick and can actually get more than 2 people in my car comfortably!  It looks great, too!