My husband drives a LOT. He takes colleagues/ clients around some, as a consultant. He wanted a car that had good mileage, was comfortable, well-built. He and my son looked at EVERY car within 50 miles (haha)for the last 6-8 MONTHS!! He just got a BMW 330i. Last years' model, so they wanted to get rid of it. He LOVES it. It is engineered well, beautiful, well-built -- just a dream car.
And I quote: "The 3-series is lower-end, price-wise, but elegant. Everything is designed in an elegant but minimalist way; good power, smooth ride. Good 'driveability.'"
You might take a look.
The G35 does everything the 330i does, just cheaper and sometimes better. BMW is rightly very, very worried about Infiniti at this point.
They're affordable, but the 300C is still the best buy in the sedan market at the current time. It's a Mercedes E420 that looks better, goes faster, and has more space for half the price.