I just bought a 2015 428i last month. I added a backup camera and the oyster dakota leather seats but kept the price under $42K. The 2015 model also comes with bluetooth streaming. (The tech is OK but not on par with many other 2015 offerings from a range of brands.) I'm a big guy (6'3" and 300lbs) but I fit nicely in the wider, longer interior of the 428i whereas I always had trouble in a 3 series. I was also a bit cramped in the 2015 MB C300 and I didn't fit at all in the new Acura TLX. In my opinion, the ride, transmission, and handling are far superior to my previous two cars (an Infiniti G37 and Lexus ES350). The closest competitor is the 2015 MB C300 (or wait for 2017 Audi A5).
If you have the extra money and are looking for a quality built vehicle, the BMW 4 series Coupe is hands down your new car. Handling, acceleration, comfort and just a damn fun car to drive. There are to few cons to mention except for the elephant in the room. The fully or even semi fully loaded 4 series will cause you to dig deep into your pocket book or wallet. The only look the basic no frills 4 series Coupe gets is as you pass them by in the lot on your way to the well equipped model. The price was the only obstacle that prevented me from owning one of these dream machines.
428i xDrive SULEV 2dr Coupe AWD (2.0L 4cyl Turbo 8A)
This car is super quick for a 4 cyl. I found myself going 100 mph and I swear I did not push down on the accelerator. The only thing that is a little squirrely is there is no spare tire. That may be a problem if you are going in a non populated area and needed to get a new tire.