Hi Sheena, we are looking to buy a car seat to keep at our parents house that will double as a booster when our child gets older. We already have a big convertible car seat that we use everyday in our car but we fly to my parents 2-3 times a year so bringing it is a hassle. She’s 3.5 so we were thinking that at this point a booster option was more practical. We also would like to keep the cost reasonable while keeping safety in mind. What are your thoughts on the Evenflo® Chase LX Booster Car Seat or something like that? It supports kids from 22-110lbs and is about $50. Please let me know your thoughts and or suggestions for other car/booster seats.