After 5 years of driving my BMW, I changed my car. Got a Certified 2013 G37X.
These are fantastic values, you get so much car for the money.
Mine has the Premium and Navigation package. I also got the Infiniti promotional financing rate of 0.99% so it was a great deal.
It's really fast, comfortable and spacious, and the audio and navigation systems are very easy to use. You can use the touch screen or the controller.
Comparing this to my 2010 328i xDrive:
* Comfort- car rides higher and seats have better bolstering and more space so big win for the G37. Trunk is bigger but opening is still little narrow. Back seats have more legroom but head and shoulder room seems about the same.
The road and wind noise in city roads is very minimal. In the highway road wind noise is comparable to BMW but a lot of road noise comes down to tires. Dealer installed new Hankook Ventus Noble S1s all seasons.
This is my first car with HID lights and now I don't want to ever go back to normal Halogens!
* Power- No comparison here. The BMW's engine is much smoother than the Infiniti's but a 328HP V6 can get you in trouble very very quickly. Not a whole lot of torque below 3500 RPM and then it just flies. You use less than 20% of the engine capacity in day to day city traffic. The Sport mode has rev matching on downshifts and is great for twisty roads and getting on the freeway ramp. All this affects the mileage which is one of the negatives of the car. 18 city / 25 highway
* Steering -Feel is still not up to BMW standards, it is tight and has good feedback but the BMW was a whole different level- you felt so connected to the car
* Handling- BMW had a lot more tight handling because of the lower height and weight balance even with neutral setup due to the all wheel drive . It was taut. the G has a definite rear wheel drive character. has a more "loose" feel if I can describe it that way. The rear wheel will step out a bit if you accelerate hard in the middle of a turn. The AWD system sends 100% to rear wheels until slip then sends up to 50% up front. I haven't tested in the rain or snow but it should be competent.
* Tech/Luxury features- BMW had heated steering wheel but not even a screen-Just a small LCD display. The G has a really good Bose sound system. Has all the luxury features you would expect in a car in this class. Navigation is straight forward. The Voice Control system is slow so I don't use it.
Overall, the older BMW's classic connected driving feel , brilliant steering and smooth engine that were it's main plus points. The newer BMW 328i's are quieter, have more tech features and the base engine is pretty quick though noisy, but the old driving dynamics are gone.
Reliability, Power, Value for money are the G's selling points. The other car I was considering was the Acura TL SH-AWD but the Infiniti was cheaper,faster and handled better.