Right now, I would have to say the Remote Start. ;D Living in SC the inside of the car in the summer can be brutal :hot:, and when trying to get 2 kids into car seats we would either have to cope with the heat or I would have to leave the keys in the ignition while getting them into the car. It may not be rational, but for some reason that always made me nervous. It is nice to get the car cooled off nice and quick. I think my kids appreciate it too.