Mine has the upgraded Boston Acoustic 6 speaker system and it sounds great. When looking for a 300 I knew I wanted one with the 6 speaker system.
Lots of room in the front, heated front seats and a nice comfy seat. Just returned from a 7 hour trip in the car and not once did i feel uncomfortable.
Tons of features some stock. I like how the features just add to the safety, convenience or luxury of the car.
I wanted a big car to be safe in case of an accident. The stability control along with the ABS makes the car feel so safe even in the worst conditions. I live in Canada and not once did I feel worried about ym safety in the winter.