Car seat after infant seat

Ni

My son is 10 months old and I’m starting to look for the car seat he will use when he outgrows in infant seat.

My biggest thing is, he switches cars ALOT. I take him to his caretaker each morning, dad picks him up, AND he has different caretakers throughout the week (our family rotates). So moving the car seat 3 times a day feels like too much. But they are so expensive...we can’t afford one for everyone like we did with the bases for our infant seat.

What do you guys do?