I am looking to buy my wife a new car and we both like the 4 door Golf. We have two young kids and are looking for a nice car to drive around town. We have a larger SUV for longer trips. I am leaning towards the diesel because of the gas mileage. I am not sure about the trim level. Besides the sunroof, what is the main difference between the GL and GLS? For the money, which would you recommend? How much off of sticker should I expect to pay? Any other advice?