Soon our family will have a long trip to see friends, therefore, our family needs to purchase a comfortable car seat for the child. Can you suggest which car seats to look out for?
are you buying it in France or at home? If at home, where is home? What country?
We live in France, but we are going to England.
Thinking about Britax Römer Baby-Safe 2 i-Size
I don't know the French equivalent of Which? which is the British equivalent of the US Consumer Reports, but I know that Which? has done extensive research on these child safety seats, and has found huge gulfs of difference in their safety.
I'd be more interested in safety than anything else (but I don't know your child). Since UK laws pretty much still mirror EU safety laws for a few more months I would ask my English friends to research on Which? and you research on the French equivalent.
Since standards are the same and both use ISOFix mountings, assuming your car is modern enough, I'd go for safest and then availability and then price. I'd expect both of the major hypermarché chains (and E. Leclerc) to have a variety.
if you use it carefully, Amazon is also a good way to see what's available and what safety certifications a seat has