Okay so from what I understand a convertable car seat is one you don't take in and out of your car, but there is no carrier for your infant. But it will last a LONG time! An infant car seat is good for small babies, you can carry them in and out of the car, but they will outgrow it in about a year. So if I go with the convertable I will need to find something to transport my baby between car, house, grocery store, etc. If I go with Infant carrier I will need to buy a convertable eventually right? What should I do??