Car seat safety

Are the more expensive car seats better I was doing some research looking for car seats and taking notes. It seems like the graco and safety 1st are always not rated best for safety or comfort. They are rated good for being cheapest. Looks like the Britax and nuna are rated best due to the fame being steel and all the extra safety features but they are almost 400 but I suppose you can’t put a price on your kid safety. I’m go tomorrow to buy buy baby and make my finally decision before baby is here but looks like Britax is the way to go and I saw a 3-n-1 I like. Any ladies have any experience with the Britax? Or what’s your fav ca seat