Re: Car Seat Dilemmas...help!
For your mom's car, if she hates the Safety 1st, why not put her seat in your car and give her your Marathon? Then, you just need one seat for the baby. If not that, then maybe a Britax Roundabout 55(since he is not overly tall) for mom and something else for the Prius.
Jacky, CPST and wife to Tim
Mama to my little red heads, Kenzie