Which convertible car seats did you or will you get? Evenflo? Britax? Dion Radian? In addition to high safety ratings, I'd like something narrow so that I could fit two car seats plus one person on the back seat of my rav4. Thanks.
D & R were born at 37w5d.

Re: convertible car seats ?
A triplet mom in my MoMs group raves about the Combi Coccoro. It is only good to 40lbs though so you may need to take that into consideration as well! Amazon has a good deal on the brown color right now
https://www.amazon.com/Combi-Cocorro-Lightweight-Convertible-Carrot/dp/B001RAFWEG/ref=sr_1_1?ie=UTF8&qid=1361819349&sr=8-1&keywords=coccoro+car+seat