Maxi cosi pria or Britax safe n sound graphene

I need to buy a car seat for my son as he’s starting to grow out of his capsule. We have a Mazda 3 and me and my partner are both tall and I’ve been told these ones are the best options for small cars. I’ve seen positives and negatives for both and have no idea which one to go with. Price is not a concern, but I want one that will be easy to install and get bubs in and out of the car.