I test drove BMW 330i, Lexus IS 350, Lexus ES 350, and Acura TL. I eventually decided to get TL. I've had my Acura for a month now. I often have to resist the urge to just drive it for fun. For those of you who are still searching out there, buy an Acura and you will not regret it.
Audio system; iPod link (designed with attention to detail); HandsFreeLink; body styling; power seats; multi-purpose information display.
The cargo nets can make a rocket scientist sweat about how to use them, especially the side cargo net; transmission (when changing gear) could be smoother; tinted window glass.