I used a graco with both of mine
@Anna this is my only concern about the nuna.. I've heard they can outgrow them really fast 🥲
I had the Doona with my first and loved the convenience of not having to wake up baby to transfer to stroller. My son did outgrow it around 12 months though. I’m expecting also and wanting something similar so e we got this one. We haven’t used it yet but we did set it up and it’s exactly what I wanted as far as a double stroller/ car seat combo. It is pretty large so maybe challenging having room for it in my trunk when we go grocery shopping and stuff but otherwise seems great https://a.co/d/3DpRhLo
We used a Doona and absolutely loved it. We will be using it again for our baby due next month. Honestly cannot imagine having to carry a car seat around or use a “travel system” after using it. Pros: It’s so convenient being carseat and stroller. Cons- some babies outgrow it at around the year mark