Some cars just ooze sex appeal.

Infiniti -- just about any Infiniti -- is among them.

Whether it's the torrid performance, the unusual Oriental-inspired interiors, the rarity of them on the road, or those delicious sounds made by the exhaust systems on these cars, Infinitis make my "IT" list.

First up is the delectable Infiniti G37 Coupe, with the best sounding exhaust this side of Ferrari.

The Infiniti G37 Coupe is all-new this year, and comes in three versions: Base, Journey and Sport, with prices starting at $34,250. Our Sport version included sport-tuned suspension, viscous limited slip differential, unique front fascia and side sills, sport steering wheel stitching and aluminum pedals.

Power comes from a 3.7-liter, 330-horsepower V6 rated at 18 mpg in the city and 24 on the highway with a five-speed automatic. I averaged about 20 miles per gallon during a week's driving.

When you get into this car, you notice that it comes closer to providing you with a custom designed bucket seat than almost any other car in its class. Everything about the seat is adjustable to your individual taste, including the side and thigh bolsters and the leg-extension feature, which includes a moveable portion of the seat under your legs. It's all quite comfortable, though the side bolsters can be a bit tight fitting in some settings.

Hit the switch, and an orange light around the button flashes to the "on" position -- and here comes that exhaust sound! If you're driving at night, a brilliant purple ring appears around some of the controls in the center stack. Beneath your feet, the brushed aluminum pedals toss off a gleam or two as they await your commands.

The sound system, called "Studio On Wheels" by Bose, is fabulous. Infiniti says it's the first system that recognizes that music usually is enjoyed as it comes toward you, so the 11 speakers are placed with that in mind.

Perhaps the only real problems I had with the car came from some of the interior ergonomics. If you're short like me, you may find the high sills of the doors confining and tough to get used to. Women in shorter dresses will want to be particularly judicious. And that rear seat? Don't even think about it unless you're about 2 feet tall.

Still, the G37 Coupe is almost incomparable when it comes to two-door touring coupe luxury, performance and sportiness.

Then there's the M Series.

Consumer Reports already says it's the best in its class, and I concur. It's the driving characteristics, the classy interior, the high technology features, just the whole ball of wax.

There are two versions--the M35 and the M45. The M45 is powered by a 4.5 liter, 325 horsepower V-8. while the 3.5 liter V-6 packs 275 horsepower.

For 2008, there are new front and rear ends with different taillights, rear fenders and headlights, and you'll be able to get the terrific all wheel driver version for either model. The car also has a new sport package that replaces the Sport model.

I've driven the M35X (the X stands for all-wheel drive) and it definitely has a place on my Top 10 Dream Machines list, with that 275-horsepower, 3.5-liter V-6 that is considered to be one of the finest powerplants in the world. Gas mileage rating is 17 mpg in the city and 24 on the highway. Prices on the M Series cars start in the mid-forties.

Standard equipment is extensive, including a five-speed automatic with manual mode, all-wheel drive, electronic brake force distribution, side impact air bags, rear seat head restraints, climate controlled front seats and power equipment.

The interior is contemporary with beautiful unvarnished-looking wood tastefully arrayed across the dashboard and aluminum and chrome accents.

I loved driving this car, which leaps into action as soon as you hit the gas. My only qualm was that it was a bit jumpy over potholes and the uneven surface of Pittsburgh streets, so you are in for a bit rougher ride than you will find in other sports sedans.

I also didn't care for the lane departure warning system, which seems to buzz at inopportune times if you so much as touch lane marking lines on the road. But other than that, the M35X is a driver's delight.