I have a res for a compact here in a couple of weeks. I've just also reserved a mid-size after reading this thread. I generally prefer a compact just for the gas mileage but saw some nice options as I was reading through. So which should I keep? My res doesn't say what class (Icar? etc) I have so what is the code for mid-size? And that's all I need (I am Executive) to select from the Exec Aisle correct?