Just rented a Chrysler 300 with the 3.6L V6. Very comfortable and capable car. 29-30 MPG too. Not as fast or as lively as the Maxima, but absolutely a more pleasant car to live with. Bigger, heavier, much more comfortable, more capable, with that wonderful rear wheel drive feel (in other words, no torque steer) and a 8 speed transmission that is solidly in gear at any speed.
Sorry Hyundai, and Kia, but nothing you guys make comes close to the refined feel of the 300.