Good yet affordable convertible car seat?

Taylor • 27 y.o. 🌸 Married to Garrett Voorhees🚀Roark Logan Voorhees born June 28th, 2019💙

My mom's two best friends have offered to buy my son's convertible car seat for when he outgrows his infant car seat. They have asked me to pick one out so they can buy it but I don't wanna ask for one that is too pricey. What do you Momma's recommend for an affordable but good seat?