We are currently using a Maxi Cosi Cabriofix for our 10.5 month old but she's going to outgrow it soon. We don't have a car, so we only use it with the seatbelt attachment in taxis, Ubers, or rentals. Looking at bigger car seats, the majority require isofix, which won't work for us not having a car of our own. Desperate for any suggestions anyone may have! Thanks in advance.