Infiniti w/Navigation
Nice car I think the new i35 comes out this year with a 250hp engine. Probably the biggest engine in the class you are looking for. I am not crazy about the styling but nissan makes nice cars. But this car is just a hooked up Nissan Maxima.
Acura TL w/Navigation
Nice car if you go for the Type-S model. This car will definitly give you the best bang for the buck. Honda always made good cars and you can get a hell of a deal on one of these.
Lexus ES300 no/Navigation?
The new 2002 es300 is insane. This one will probably be the most expensive out of the 3 since it just came out. The styling and quility of the car is amazing and since this is a new body it will be around for a long time. I think the last es looked the same for 8 years. Spend a little more now but your car will look fresh for many years.
Personally I would go for the Lexus. I own one and I love it
