When used correctly, it is entirely safe to bring a baby home from the hospital in a convertible such as the 4Ever. That said, there are a couple of things to consider: Hospital policy may make things challenging. It’s true that some hospitals will make life very difficult for you if you don’t show up with an infant bucket seat. You should call your hospital and clarify. Often talking to the charge nurse in the postpartum wing will be your best bet. All-in-one car seats can just be overwhelming. There are at least 4 different modes of use on that seat, and frankly the learning curve to use it isn’t something I typically recommend to first time parents. This is an over-generalization but typically the newborn bucket seats are simpler. They only do one thing. So… while it’s ok to get the 4Ever if you want one, I’d say it’s even more important to visit with a CPST to learn how to use it before you bring the baby home, as well as planning to make follow up visits occasionally (especially at milestones like changing the mode of use) as the baby grows. The longer I work with families and car seats the less I’m a fan of the Swiss Army Knife style of car seats for this reason. They are, however, safe when used correctly. And, full disclosure, this is my personal opinion and does not reflect a general opinion among CPSTs. Now - in terms of the safest car seat - it’s whichever one fits your car, fits your child, and you can use correctly every time. This really is the truth. Yes, Nuna seats are great and usually very user friendly. But you should not feel like you have to spend that much to keep your child safe. The more important thing is to read your vehicle manual and your car seat manual, and reach out for clarification on anything you might need help on. You don’t mention what kind of car you drive. That could help us tailor recommendations for you. More on reddit.com

I love Graco Extend2Fit. Works well in my SUV you might vary in a sedan. More on reddit.com

https://m.albeebaby.com/cybex-sirona-s-sensorsafe-2-1-convertible-car-seat-indigo-blue.html

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If you’re in the US, the organization you’re looking for is NHTSA, the National Highway Traffic Safety Administration, part of the federal Dept of Transportation. It’s the federal agency charged with vehicle safety, including car seats. They use standardized measures to test and rate car seats, and all car seats sold in the US meet their safety standards. They don’t even rate safety- it’s either a pass or a fail, in which case it can’t be sold. There are some car seats that might meet different safety standards in other countries, but in the US, any seat you buy will be fine. More on reddit.com