well first and foremost is the engine. in the C when i step on the gas it relly moves where my base took forever to get moving. the C seems to ride a lot somoother, not that my base ran rough. i like the leather. having the EVIC is nice. dual zone air rocks. i will give more feedback after about a week of driving around. it has been raining really bad here so i havent been able to really open it up yet.
