Drove BMW 3 series, G35, Volvo S60 and IS 300 just to be complete. Expected to buy the G35 but after driving the Lexus, I just loved driving it. It was by far the most engaging, quietest, and tightest ride. The G35 was faster in a straight line but I felt "one-with-the-car" driving the IS 300. Feels much faster than it really is. And it is not slow. Beautiful styling in and out and great build quality. Was also sold on the reliability record. Consumer Reports listed it as one of the top 3 most reliable cars for 2004. I hope that holds true with mine.
Beautiful in and out, push-button manual shift (however, don't use much), chrome alloys, quiet
Small trunk, needs audio controls on steering wheel, more power